Hong Kong legislator and activist Leung Kwok-hung, also known as "Long Hair", gestures after being detained by police at a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit, in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu 

Police stop a pro-China supporter as he confronts pro-democracy activists at a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit, in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu 

Police stop a pro-China supporter as he confronts pro-democracy activists at a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit, in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu 

Pro-China supporters try to stop pro-democracy activists from carrying a mock coffin symbolising those killed during a crackdown on the pro-democracy movement at Beijing's Tiananmen Square in 1989, at a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit, in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu 

Pro-democracy activist Avery Ng is detained by police as he takes part in a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu 

Pro-democracy activist Joshua Wong is detained by police as he takes part in a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping's visit in Hong Kong, China July 1, 2017. REUTERS/Tyrone Siu TPX IMAGES OF THE DAY 

A protester steps on portraits of Chinese President Xi Jinping during a candlelight vigil demanding the release of Chinese Nobel rights activist Liu Xiaobo as Xi visits Hong Kong, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

A protester holds a portrait of Chinese Nobel rights activist Liu Xiaobo as she step on portraits of Chinese President Xi Jinping during a candlelight vigil demanding the release of Liu, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

Protesters take part in a candlelight vigil demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping visiting, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

Protesters take part in a candlelight vigil demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping visiting, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

Protesters take part in a candlelight vigil demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping visiting, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

Protesters take part in a candlelight vigil demanding the release of Chinese Nobel rights activist Liu Xiaobo, during Chinese President Xi Jinping visiting, ahead of the 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

A protester holds a candle next to a portrait of Chinese Nobel rights activist Liu Xiaobo demanding his release, during Chinese President Xi Jinping visiting, ahead of 20th anniversary of the city's handover from British to Chinese rule, in Hong Kong, China June 29, 2017. REUTERS/Tyrone Siu 

Protesters wearing masks of Chinese Nobel rights activist Liu Xiaobo stand outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip TPX IMAGES OF THE DAY 

Student leader Joshua Wong (2nd L) chants slogans during a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Photos of Chinese Nobel rights activist Liu Xiaobo (L) and wife Liu Xia are left by protesters outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Student leader Joshua Wong (R) attends a protest demanding the release of Chinese Nobel rights activist Liu Xiaobo outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Protesters wearing masks of Chinese Nobel rights activist Liu Xiaobo stand outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Protesters wearing masks of Chinese Nobel rights activist Liu Xiaobo stand outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Protesters wearing masks of Chinese Nobel rights activist Liu Xiaobo stand outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Protesters wearing masks of Chinese Nobel rights activist Liu Xiaobo march towards China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

A policeman reacts in front of China's Liaison Office where protesters display photos of Chinese Nobel rights activist Liu Xiaobo, in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Protesters display photos of Chinese Nobel rights activist Liu Xiaobo in front of a policeman outside China's Liaison Office in Hong Kong, China June 27, 2017. REUTERS/Bobby Yip 

Photos of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo are seen outside the Chinese liaison office, after a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Photos of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo are seen on police barrier during a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, outside the Chinese liaison office in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Pro-democracy demonstrators hold up photo of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, outside the Chinese liaison office in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Pro-democracy demonstrators hold up photo of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, outside the Chinese liaison office in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Pro-democracy demonstrators hold up photo of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, outside the Chinese liaison office in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Pro-democracy demonstrators hold up photo of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of Liu, who was sentenced to imprisonment seven years ago on Christmas day, outside the Chinese liaison office in Hong Kong, China December 25, 2016. REUTERS/Tyrone Siu 

Protesters against visiting Zhang Dejiang, the chairman of China's National People's Congress, demand the release of Chinese dissident Liu Xiaobo, in Hong Kong May 18, 2016. REUTERS/Paul Yeung 

Pro-democracy demonstrators blow a candle of a birthday cake to celebrating 60th birthday of jailed Nobel Peace Prize laureate Liu Xiaobo in Hong Kong, China December 28, 2015. Hong Kong protesters demanded the release of Liu, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu 

Pro-democracy demonstrators imitate a three-finger salute from the movie "The Hunger Games" as they hold signs during a protest to celebrating 60th birthday of jailed Nobel Peace Prize laureate Liu Xiaobo in Hong Kong, China December 28, 2015. Hong Kong protesters demanded the release of Liu, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu 

A pro-democracy demonstrator holds chair prop, alluding to empty chair at Liu Xiaobo’s Nobel Peace Prize awarding ceremony in 2010, with photo of Liu and his wife Liu Xia during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Protesters on Friday called for the release of Liu, 59, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu 

A pro-democracy demonstrator holds up a chair prop, alluding to an empty chair at Liu Xiaobo's Nobel Peace Prize awarding ceremony in 2010, with a photo of Liu and his wife Liu Xia, during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu

Signs and portraits of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia are seen in front of the national emblem of China during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu

A pro-democracy demonstrator holds a portrait of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to call for the freeing of Chinese dissidents outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu

Pro-democracy demonstrators imitate a three-finger salute from the movie "The Hunger Games" as they hold signs reading, "Release Liu Xiaobo, immediately" during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu 

Pro-democracy demonstrators hold signs and portraits of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu

Pro-democracy demonstrators hold up signs and posters of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu

A pro-democracy demonstrator holds up a chair prop, alluding to an empty chair at Liu Xiaobo’s Nobel Peace Prize awarding ceremony in 2010, with a photo of Liu and his wife Liu Xia, during a protest outside the Chinese liaison office in Hong Kong, China December 25, 2015. Hong Kong protesters on Friday demanded the release of Chinese Nobel Laureate Liu Xiaobo, who was sentenced to imprisonment six years ago on Christmas day. A veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the Chinese army, Liu was jailed for 11 years in 2009 on subversion charges for organising the "Charter 08" petition that urges the overthrow of the one-party rule. REUTERS/Tyrone Siu TPX IMAGES OF THE DAY

Pro-democracy lawmakers Lee Cheuk Yan (L) and Albert Ho (2nd L) hold balloons tied with slogans reading "Release Liu Xiaobo" and Liu's portrait during a protest to urging for release the jailed Chinese Nobel Peace Prize laureate Liu Xiaobo outside the Chinese liaison office in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST SOCIETY CRIME LAW) 

Policemen stand near a portrait of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo with balloons and slogans reading "Release Liu Xiaobo", during a protest urging for his release, outside the Chinese liaison office in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST CRIME LAW SOCIETY) 

Pro-democracy protesters release balloons with a portrait of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and a slogan reading "Release Liu Xiaobo" during a protest urging for the release of Liu outside the Chinese liaison office in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CRIME LAW CIVIL UNREST SOCIETY) 

A portrait of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo is seen on the front of a gate outside the Chinese liaison office, during a protest urging for his release, in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST SOCIETY) 

Protesters tie a portrait of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo with balloons with slogans reading "Release Liu Xiaobo" behind a police officer during a protest urging for the release of Liu outside the Chinese liaison office in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy protesters hold signs and posters of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo (R) and his wife Liu Xia (C) during a protest outside the Chinese liaison office in Hong Kong December 25, 2014. Protesters on Thursday called for the release of Liu, 58, a veteran dissident involved in the 1989 Tiananmen Square pro-democracy protests crushed by the army, jailed for 11 years on Christamas Day in 2009 on subversion charges for organising a petition urging an end to one-party rule. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST SOCIETY) 

A placard showing a portrait of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, is seen next to hair from pro-democracy activists who shaved during a protest call for her release in Hong Kong February 14, 2014. Liu Xia is unwell, under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activists shout slogans after shaving their heads during a protest to call for the release of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, in Hong Kong February 14, 2014. Liu Xia is unwell, under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

A pro-democracy activist sits in front of a portrait of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, after shaving her head to protest and call for the release of Liu in Hong Kong February 14, 2014. Liu Xia is unwell, under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

A pro-democracy activist shaves her head during a protest to call for the release of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, in Hong Kong February 14, 2014. Liu Xia is unwell, under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

Pro-democracy activists shave their heads during a protest to call for the release of Liu Xia, wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, in Hong Kong February 14, 2014. Liu Xia is unwell, under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. The Chinese characters in the banner read: "Release Liu Xia". REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy protesters throw joss papers into the air during a protest to urge for the release of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia outside the Chinese liaison office in Hong Kong December 25, 2013. Protesters on Tuesday called for the release of Liu, who was sentenced to 11 years imprisonment four years ago on Christmas Day. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin shouts during a protest to urge for the release of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia outside the Chinese liaison office in Hong Kong December 25, 2013. Protesters on Wednesday called for the release of Liu, who was sentenced to 11 years' imprisonment four years ago on Christmas Day. The paper reads, "Release". REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin prepares to throw a pineapple with a Christmas hat into the Chinese liaison office during a protest to urge for the release of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia in Hong Kong December 25, 2013. Protesters on Wednesday called for the release of Liu, who was sentenced to 11 years imprisonment four years ago on Christmas Day. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

Pro-democracy protester holds a posters of Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of jailed Liu and his wife Liu Xia in Hong Kong December 25, 2013. Protesters on Wednesday called for the release of Liu, who was sentenced to 11 years imprisonment four years ago on Christmas Day. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy protesters carry a seat with a posters of Chinese Nobel Peace Prize laureate Liu Xiaobo during a protest to urge for the release of jailed Liu and his wife Liu Xia in Hong Kong December 25, 2013. Protesters on Wednesday called for the release of Liu, who was sentenced to 11 years' imprisonment four years ago on Christmas Day. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin attempts to climb a barrier during a protest to urge for the release of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia outside the Chinese liaison office in Hong Kong December 5, 2013. The wife of jailed Nobel Peace Prize Laureate Liu Xiaobo is unwell under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin climbs a barrier during a protest to urge for the release of jailed Chinese Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia outside the Chinese liaison office in Hong Kong December 5, 2013. The wife of jailed Nobel Peace Prize Laureate Liu Xiaobo is unwell under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin posts a picture of Liu Xia, the wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, on a wall during a protest calling for the freeing of Chinese dissidents outside the Chinese liaison office in Hong Kong December 5, 2013. The wife of jailed Nobel Peace Prize Laureate Liu Xiaobo is unwell under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2, 2013. REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST) 

Pro-democracy activist Lui Yuk-lin (2nd R) posts a picture of Liu Xia, the wife of jailed Nobel Peace Prize Laureate Liu Xiaobo, on a wall during a protest calling for the freeing of Chinese dissidents outside the Chinese liaison office in Hong Kong December 5, 2013. The wife of jailed Nobel Peace Prize Laureate Liu Xiaobo is unwell under house arrest and possibly suffering from severe depression, but refuses to seek medical help as she is afraid of further punishment, her friends said on December 2,2013.REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST)