Li Zhanshu (R), chairman of National People's Congress (NPC) Standing Committee, Xu Qiliang (C), vice chairman of the Central Military Commission, and others attend an event marking the 15th anniversary of the implementation of the Anti-Secession Law at the Great Hall of the People in Beijing, China May 29, 2020. REUTERS/Yew Lun Tian

Li Zhanshu (R), chairman of National People's Congress (NPC) Standing Committee, Xu Qiliang, vice chairman of the Central Military Commission, and Li Zuocheng (C), chief of the Joint Staff Department, attend an event marking the 15th anniversary of the implementation of the Anti-Secession Law at the Great Hall of the People in Beijing, China May 29, 2020. REUTERS/Yew Lun Tian

Vice Minister of China's Health Commission Li Bin (L2), director-general of the Health Emergency Response Office of Health Commission Xu Shuqiang (L3), director-general of Chinese Disease Control and Prevention Gao Fu (R) attend a news conference on prevention and control of the new coronavirus related pneumonia in Beijing, China January 22, 2020. REUTERS/Jason Lee

May 9, 2019; New York City, NY, USA; China National Team center Li Yueru (14) drives to the basket as New York Liberty center Han Xu (21) defends during the second quarter of the preseason WNBA game at Barclays Center. Mandatory Credit: Vincent Carchietta-USA TODAY Sports

May 9, 2019; New York City, NY, USA; China National Team center Li Yueru (14) drives to the basket as New York Liberty center Han Xu (21) defends during the second quarter of the preseason WNBA game at Barclays Center. Mandatory Credit: Vincent Carchietta-USA TODAY Sports

May 9, 2019; New York City, NY, USA; China National Team center Li Yueru (14) drives to the basket as New York Liberty center Han Xu (21) defends during the second quarter of the preseason WNBA game at Barclays Center. Mandatory Credit: Vincent Carchietta-USA TODAY Sports

May 9, 2019; New York City, NY, USA; New York Liberty center Han Xu (21) battles for position with China National Team center Li Yueru (14) during the second quarter of the preseason WNBA game at Barclays Center. Mandatory Credit: Vincent Carchietta-USA TODAY Sports

May 9, 2019; New York City, NY, USA; New York Liberty center Han Xu (21) battles for the ball against China National Team center Li Yueru (14) during the first quarter of the preseason WNBA game at Barclays Center. Mandatory Credit: Vincent Carchietta-USA TODAY Sports

Asian Athletics Championships - Khalifa International Stadium, Doha, Qatar - April 23, 2019 China's Xu Huiqin, China's LI Ling and Philippines' Natalie Rose Uy with their medals after finishing first, second and third respectively in the Women's Pole Vault REUTERS/Ibraheem Al Omari

Robin Li, co-founder, chairman and CEO of Baidu, and Chairman of China FAW Group Xu Liuping stand in front of a screen showing a self-driving Hongqi SUV at an autonomous vehicle test track, at the 2018 Baidu World conference in Beijing, China, November 1, 2018. REUTERS/Jason Lee

Robin Li, co-founder, chairman and CEO of Baidu, and Chairman of China FAW Group Xu Liuping attend the 2018 Baidu World conference in Beijing, China, November 1, 2018. REUTERS/Jason Lee

(L to R) President of Didi Chuxing Jean Liu, Chairman of China FAW Group Xu Liuping, Chairman of Beijing Automotive Group Xu Heyi, Chairman and President of BYD Company Limited Wang Chuanfu, Pesident of Guangzhou Automotive Group Feng Xingya, founder and Chief Executive Officer of CHJ Automotive Li Xiang, attend a news conference ahead of the Beijing auto show in Beijing, China April 24, 2018. REUTERS/Norihiko Shirouzu

Newly elected vice chairman of the Central Military Commission Xu Qiliang (bottom) and (2nd row L to R) members of the Central Military Commission Zhang Shengmin and Li Zuocheng, vice chairman of the Central Military Commission Zhang Youxia, members of the Central Military Commission Wei Fenghe and Miao Hua, take an oath to the Constitution at the sixth plenary session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 18, 2018. REUTERS/Jason Lee TPX IMAGES OF THE DAY

Newly elected vice chairman of the Central Military Commission Xu Qiliang (bottom) and (2nd row L to R) members of the Central Military Commission Zhang Shengmin and Li Zuocheng, vice chairman of the Central Military Commission Zhang Youxia, members of the Central Military Commission Wei Fenghe and Miao Hua, take an oath to the Constitution at the sixth plenary session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 18, 2018. REUTERS/Jason Lee

(Bottom) Xu Qiliang, vice chairman of the Central Military Commission, (2nd row L to R) members of the Central Military Commission Zhang Shengmin and Li Zuocheng, vice chairman of the Central Military Commission Zhang Youxia, members of the Central Military Commission Wei Fenghe and Miao Hua, take an oath to the Constitution at the sixth plenary session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 18, 2018. REUTERS/Jason Lee

Chinese Premier Li Keqiang reacts as he is greeted by Auckland Mayor Phil Goff and Consul General Xu Erwen (C) after arriving in Auckland, New Zealand, March 27, 2017. REUTERS/Nigel Marple

A man surnamed Xu, 50, walks past a house carrying the Chinese character "Chai", meaning "demolition", in Guangfuli neighbourhood, in Shanghai, China, April 8, 2016. Xu's whole family used to live under the same roof together in Guangfuli. In a corner of Shanghai, surrounded by a cement wall, lies one of the world's most valuable fields of debris and garbage. On paper, the Guangfuli neighbourhood is a real estate investor's dream: a plot in the middle of one of the world's most expensive and fast-rising property markets. But the reality is more like a developer's nightmare, thanks to hundreds of people living there who have refused to budge from their ramshackle homes for nearly 16 years as the local authority sought to clear the land for new construction. REUTERS/Aly Song SEARCH "GUANGFULI" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES

Woman surnamed Xu watches TV at her eight-square-meter house where she lives with her husband at Guangfuli neighbourhood in Shanghai, China, April 19, 2016. In a corner of Shanghai, surrounded by a cement wall, lies one of the world's most valuable fields of debris and garbage. On paper, the Guangfuli neighbourhood is a real estate investor's dream: a plot in the middle of one of the world's most expensive and fast-rising property markets. But the reality is more like a developer's nightmare, thanks to hundreds of people living there who have refused to budge from their ramshackle homes for nearly 16 years as the local authority sought to clear the land for new construction. REUTERS/Aly Song SEARCH "GUANGFULI" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY

Jing Li (L) and her husband Ke Xu wear Tibetan traditional costumes as they pose for their wedding photos in front of Tibetan prayer flags at the Nianqing Tanggula mountain pass in the Tibet Autonomous Region, China November 18, 2015. Ke, 23, and Jing,22, both from Shiyan in northwestern Hubei province, have lived in Tibet for three years. The couple married last month. REUTERS/Damir Sagolj

Jing Li (L) and her husband Ke Xu wear Tibetan traditional costumes as they pose for their wedding photos in front of Tibetan prayer flags at the Nianqing Tanggula mountain pass in the Tibet Autonomous Region, China November 18, 2015. Ke, 23, and Jing,22, both from Shiyan in northwestern Hubei province, have lived in Tibet for three years. The couple married last month. REUTERS/Damir Sagolj

Jing Li wears a Tibetan traditional costume as she gets ready for her wedding photo to be taken at the Nianqing Tanggula mountain pass in the Tibet Autonomous Region, China November 18, 2015. Jing, 22, and her husband Ke Xu, 23, both from Shiyan in northwestern Hubei province, have lived in Tibet for three years. The couple married last month. REUTERS/Damir Sagolj TPX IMAGES OF THE DAY

Jing Li (L) and her husband Ke Xu wear Tibetan traditional costumes as they pose for their wedding photos in front of Tibetan prayer flags at the Nianqing Tanggula mountain pass in the Tibet Autonomous Region, China November 18, 2015. Ke, 23, and Jing,22, both from Shiyan in northwestern Hubei province live in Tibet for three year. The couple married last month. REUTERS/Damir Sagolj

Jing Li wears a Tibetan traditional costume as she gets ready for her wedding photo to be taken at the Nianqing Tanggula mountain pass in the Tibet Autonomous Region, China November 18, 2015. Jing, 22, and her husband Ke Xu, 23, both from Shiyan in northwestern Hubei province live in Tibet for three year. The couple married last month. REUTERS/Damir Sagolj

Xu Shaoshi (L), chairman of China's National Development and Reform Commission and Choi Kyung-hwan (R), South Korea's Deputy Prime Minister and Minister of Strategy and Finance sign a document as South Korean President Park Geun-Hye (back R) and Chinese Premier Li Keqiang, look on during a signing agreement following their meeting at the presidential Blue House in Seoul, South Korea, October 31, 2015. REUTERS/Lee Jin-man/Pool

Xu Shaoshi (L), Chairman of the Naional Development and Reform Commission shakes hands with European Commissioner for Research Carlos Moeda (front R) in front of Chinese Premier Li Keqiang (back C) and European Council President Donald Tusk (back R) during a EU-China summit in Brussels, Belgium June 29, 2015. REUTERS/John Thys/Pool

German Chancellor Angela Merkel (2nd R) and China's Premier Li Keqiang (2nd L) watch as Volkswagen AG board member Jochem Heizmann (R) and Xu Jianyi of First Automotive Works exchange documents during a signing ceremony at the Chancellery in Berlin October 10, 2014. Merkel urged China on Friday to ensure fair access for German firms to Chinese markets as well as greater freedom for media and respect for human rights. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS BUSINESS)

China's gold medallists (front row L-R) Xu Jiaya, Li Xiang, Li Zhuhao and Ning Zetao pose after the men's 4x100m medley relay final swimming competition at the Munhak Park Tae-hwan Aquatics Center during the 17th Asian Games in Incheon September 26, 2014. Also pictured are Japan's silver medallists (back row L-4th L) Ryosuke Irie, Yasuhiro Koseki, Hirofumi Ikebata, Shinri Shioura and South Korea's bronze medallists (back row 5th L - R) Park Seon-kwan, Choi Kyu-woong, Chang Cyu-cheol and Park Tae-hwan. REUTERS/Tim Wimborne (SOUTH KOREA - Tags: SPORT SWIMMING)

China's (L-R) Xu Jiaya, Li Xiang, Li Zhuhao and Ning Zetao pose after winning gold in the men's 4x100m medley relay final swimming competition at the Munhak Park Tae-hwan Aquatics Center during the 17th Asian Games in Incheon September 26, 2014. REUTERS/Tim Wimborne (SOUTH KOREA - Tags: SPORT SWIMMING)

China's (L-R) Xu Jiaya, Li Xiang, Li Zhuhao and Ning Zetao pose after winning gold in the men's 4x100m medley relay final swimming competition at the Munhak Park Tae-hwan Aquatics Center during the 17th Asian Games in Incheon September 26, 2014. REUTERS/Tim Wimborne (SOUTH KOREA - Tags: SPORT SWIMMING)

Xu Shaoshi (L), Chairman of the National Development and Reform Commission (NDRC) of the People's Republic of China, and Britain's Business Secretary Vince Cable (2nd L) sit at a table near Britain's Prime Minister David Cameron and Chinese Premier Li Keqiang (R) during a signing ceremony in London June 17, 2014. REUTERS/Neil Hall (BRITAIN - Tags: POLITICS)

China's Xu Wenlong lies on the ground after crossing the finish line in last place in the men's cross-country 50 km mass start free event at the Sochi 2014 Winter Olympic Games February 23, 2014. REUTERS/Carlos Barria (RUSSIA - Tags: OLYMPICS SPORT SKIING)

China's coach Marcel Rocque (3rd R) speaks to China's lead Zang Jialiang, second Ba Dexin, team official Li Hongchen, third Xu Xiaoming and skip Liu Rui (L-R) during their men's curling semi-final game against Canada at the 2014 Sochi Winter Olympics in the Ice Cube Curling Center in Sochi February 19, 2014. REUTERS/Ints Kalnins (RUSSIA - Tags: SPORT OLYMPICS SPORT CURLING)

China's coach Marcel Rocque (3rd R) speaks to China's lead Zang Jialiang, second Ba Dexin, team official Li Hongchen, third Xu Xiaoming and skip Liu Rui (L-R) during their men's curling semi-final game against Canada at the 2014 Sochi Winter Olympics in the Ice Cube Curling Center in Sochi February 19, 2014. REUTERS/Ints Kalnins (RUSSIA - Tags: SPORT OLYMPICS SPORT CURLING)

Chinese singer and actor Li Yugang presents a creation by Chinese designer Laurence Xu as part of his Haute Couture Fall Winter 2013/2014 fashion show in Paris July 4, 2013. REUTERS/Gonzalo Fuentes (FRANCE - Tags: FASHION ENTERTAINMENT)

Chinese singer and actor Li Yugang presents a creation by Chinese designer Laurence Xu as part of his Haute Couture Fall Winter 2013/2014 fashion show in Paris July 4, 2013. REUTERS/Gonzalo Fuentes (FRANCE - Tags: FASHION ENTERTAINMENT)

Chinese singer and actor Li Yugang presents a creation by Chinese designer Laurence Xu as part of his Haute Couture Fall Winter 2013/2014 fashion show in Paris July 4, 2013. REUTERS/Gonzalo Fuentes (FRANCE - Tags: FASHION ENTERTAINMENT TPX IMAGES OF THE DAY)

Chinese singer and actor Li Yugang presents a creation by Chinese designer Laurence Xu as part of his Haute Couture Fall Winter 2013/2014 fashion show in Paris July 4, 2013. REUTERS/Gonzalo Fuentes (FRANCE - Tags: FASHION ENTERTAINMENT)

Chinese actor Zhang Guo-li (R) and actress Xu Fan (C) speak backstage after winning the Best Film From Mainland And Taiwan award at the Hong Kong Film Awards presentation ceremony in Hong Kong April 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT)

Chinese actors Zhang Guo-li (R) and Xu Fan pose backstage after winning the Best Film From Mainland And Taiwan award for their movie "Back to 1942" at the Hong Kong Film Awards presentation ceremony in Hong Kong April 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT)

Chinese actors Zhang Guo-li (R) and Xu Fan pose backstage after winning the Best Film From Mainland And Taiwan award for their movie "Back to 1942" at the Hong Kong Film Awards presentation ceremony in Hong Kong April 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT)

Chinese actors Zhang Guo-li (R) and Xu Fan pose backstage after winning the Best Film From Mainland And Taiwan award for their movie "Back to 1942" at the Hong Kong Film Awards presentation ceremony in Hong Kong April 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT)

Chinese actors Zhang Guo-li (R) and Xu Fan pose on the red carpet at the Hong Kong Film Awards presentation ceremony in Hong Kong April 13, 2013. REUTERS/Tyrone Siu (CHINA - Tags: ENTERTAINMENT)

Actress Li Chengyuan (L) and director Xu Haofeng pose on the red carpet of the movie "Judge Archer" at the Rome Film Festival November 16, 2012. REUTERS/Tony Gentile (ITALY - Tags: ENTERTAINMENT)

(L-R) China's Na Li, Xiaojuan Luo, Yujie Sun and Anqi Xu pose with their gold medals during the women's epee team fencing competition victory ceremony at the ExCel venue at the London 2012 Olympic Games August 4, 2012. REUTERS/Adrees Latif (BRITAIN - Tags: OLYMPICS SPORT FENCING)

(L-R) China's Na Li, Xiaojuan Luo, Yujie Sun and Anqi Xu celebrate with their gold medals during the women's epee team fencing competition victory ceremony at the ExCel venue at the London 2012 Olympic Games August 4, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT FENCING)

(L-R) China's Na Li, Xiaojuan Luo, Yujie Sun and Anqi Xu pose with their gold medals during the women's epee team fencing competition victory ceremony at the ExCel venue at the London 2012 Olympic Games August 4, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT FENCING)

China's Li Xiao Xu (R) goes for a block against Serbia's Aleksandar Rasic during their friendly basketball game as part of preparations for the FIBA World Basketball Championship, in Belgrade August 22, 2010. REUTERS/Ivan Milutinovic (SERBIA - Tags: SPORT BASKETBALL)

Silver medallist Xu Li of China poses during the medal ceremony for the 55kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Oleg Popov (CHINA)

Saori Yoshida of Japan (top) fights Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Shaun Best (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Shaun Best (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Shaun Best (CHINA)

(L-R) Silver medallist Xu Li of China, gold medallist Saori Yoshida of Japan, bronze medallists Tonya Verbeek of Canada and Jackeline Renteria of Colombia pose during the medal ceremony in the 55kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Oleg Popov (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Issei Kato (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Oleg Popov (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Oleg Popov (CHINA)

Saori Yoshida of Japan (L) fights Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Issei Kato (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Issei Kato (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Issei Kato (CHINA)

Saori Yoshida of Japan celebrates after defeating Xu Li of China during their 55kg women's freestyle gold medal wrestling bout at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Issei Kato (CHINA)

Jackeline Renteria of Colombia (L) fights Xu Li of China during their 55kg women's semi-final freestyle wrestling match at the Beijing 2008 Olympic Games August 16, 2008. REUTERS/Oleg Popov (CHINA)