An empty street is seen in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

A car drives in an empty street in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

A nurse takes the temperature of a woman in the reception area of the First People's Hospital in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

Doctors look at a screen that shows the ward where patients who are infected with the coronavirus are treated at the First People's Hospital in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

A woman signs in at the reception area of the First People's Hospital in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

Nurses in protective gear talk to people in the reception area of the First People's Hospital in Yueyang, Hunan Province, near the border with Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a driver at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a driver at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of car passenger at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a driver at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical workers in protective suits and police wait for drivers at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a car passenger at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a car passenger at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a car passenger at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

A medical worker in protective suit checks the body temperature of a driver at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

Medical workers in protective suits check the body temperature of car passengers at a checkpoint outside the city of Yueyang, Hunan Province, near the border to Hubei Province that is on lockdown after an outbreak of a new coronavirus, China, January 28, 2020. REUTERS/Thomas Peter

Sisters from Saudi Arabia, who go by aliases Reem and Rawan, are pictured in Hong Kong, China March 20, 2019. Picture taken March 20, 2019. REUTERS/Yuyang Wang

A giant "Companion" inflatable sculpture by U.S. artist Brian Donnelly, known professionally as Kaws, is seen displayed at the Victoria Harbour in Hong Kong, China March 22, 2019. REUTERS/Yuyang Wang

A giant "Companion" inflatable sculpture by U.S. artist Brian Donnelly, known professionally as Kaws, is seen displayed at the Victoria Harbour in Hong Kong, China March 22, 2019. REUTERS/Yuyang Wang

Visitors take pictures of a giant "Companion" inflatable sculpture by U.S. artist Brian Donnelly, known professionally as Kaws, at the Victoria Harbour in Hong Kong, China March 22, 2019. REUTERS/Yuyang Wang

A worker walks past a "Companion" inflatable sculpture by U.S. artist Brian Donnelly, known professionally as Kaws, at a shipyard before the sculpture is set to be displayed in Victoria Harbour, in Hong Kong, China March 19, 2019. REUTERS/Yuyang Wang

People attend a special prayer for victims of the Christchurch shooting in New Zealand, at Jamia mosque in Hong Kong, China March 18, 2019. REUTERS/Yuyang Wang

People attend a special prayer for victims of the Christchurch shooting in New Zealand, at Jamia mosque in Hong Kong, China March 18, 2019. REUTERS/Yuyang Wang

People attend a special prayer for victims of the Christchurch shooting in New Zealand, at Jamia mosque in Hong Kong, China March 18, 2019. REUTERS/Yuyang Wang

Japanese actor Yakusho Koji poses with his trophy after winning the best actor award at the 13th Asian Film Awards in Hong Kong, China March 17, 2019. Picture taken March 17, 2019. REUTERS/Yuyang Wang

Japanese art director Keiko Mitsumatsu, musician Haruomi Hosono, director Hirokazu Koreeda and actor Sakura Ando pose after winning the Best Film Award for their movie "Shoplifters" at the 13th Asian Film Awards in Hong Kong, China, March 17, 2019. Picture taken March 17, 2019. REUTERS/Yuyang Wang

Kazakh actor Samal Yeslyamova poses with her trophy after winning the best actress award at the 13th Asian Film Awards in Hong Kong, China, March 17, 2019. Picture taken March 17, 2019. REUTERS/Yuyang Wang

Sam Brownback, U.S. ambassador for International Religious Freedom, attends the Hong Kong Foreign Correspondents' Club in Hong Kong, China, March 8, 2019. REUTERS/Yuyang Wang

Sam Brownback, U.S. ambassador for International Religious Freedom, speaks at the Hong Kong Foreign Correspondents' Club in Hong Kong, China, March 8, 2019. REUTERS/Yuyang Wang

Huawei's Chief Legal Officer Song Liuping speaks next to Senior Vice President and Global Cyber Security and Privacy Officer John Suffolk (L) and Rotating Chairman Guo Ping (2nd R) at a news conference in Shenzhen, Guangdong province, China March 7, 2019. REUTERS/Yuyang Wang

Huawei's Senior Vice President and Global Cyber Security and Privacy Officer John Suffolk speaks next to Huawei's Chief Legal Officer Song Liuping (3rd L) and Rotating Chairman Guo Ping (3rd R) at a news conference in Shenzhen, Guangdong province, China March 7, 2019. REUTERS/Yuyang Wang

Industrial robots are pictured at a factory of Topstar Technology during a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Dongguan, Guangdong province, China March 1, 2019. Picture taken March 1, 2019. REUTERS/Yuyang Wang

An autonomous vehicle of self-driving car startup Pony.ai is seen during a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Guangzhou, Guangdong province, China February 28, 2019. Picture taken February 28, 2019. REUTERS/Yuyang Wang

A tunnel boring machine (TBM) of China Tunnel Construction Group is pictured during a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Foshan, Guangdong province, China March 1,Ê2019. Picture taken March 1, 2019. REUTERS/Yuyang Wang

Workers test industrial robots at a factory of Topstar Technology during a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Dongguan, Guangdong province, China March 1, 2019. Picture taken March 1, 2019. REUTERS/Yuyang Wang

An autonomous vehicle of self-driving car startup Pony.ai is seen during a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Guangzhou, Guangdong province, China February 28, 2019. Picture taken February 28, 2019. REUTERS/Yuyang Wang

Autonomous aerial vehicle company EHang delivers coffee with its Falcon drone to the delegation on a government-organised tour to the Guangdong-Hong Kong-Macao Greater Bay Area, in Guangzhou, Guangdong province, China February 28,2019. Picture taken February 28, 2019. REUTERS/Yuyang Wang

Pro-democracy activist Figo Chan, holding a sign showing Secretary for Constitutional and Mainland Affairs Patrick Nip, clashes with pro-Beijing protesters over the Chinese national anthem law controversy outside the Legislative Council Complex in Hong Kong, China, January 23, 2019. REUTERS/Yuyang Wang

Two women hold a print of Time magazine's cover, which features the imprisoned Reuters Myanmar reporters Wa Lone and Kyaw Soe Oo as 'Person of Year', during a rally outside the Foreign Correspondent's Club, marking the one-year anniversary of their arrests, in Hong Kong, China December 12, 2018. REUTERS/Yuyang Wang

People give gestures which have become symbolic for the imprisoned Reuters Myanmar reporters Wa Lone and Kyaw Soe Oo during a rally outside the Foreign Correspondent's Club, marking the one-year anniversary of their arrests, in Hong Kong, China December 12, 2018. REUTERS/Yuyang Wang

U.S. Navy sailors stand guard on the flight deck of U.S. Navy aircraft carrier USS Ronald Reagan during its visit to Hong Kong, China November 21, 2018. REUTERS/Yuyang Wang

U.S. Navy aircraft carrier USS Ronald Reagan is seen during its visit to Hong Kong, China November 21, 2018. REUTERS/Yuyang Wang

U.S. Navy aircraft carrier USS Ronald Reagan is seen during its visit to Hong Kong, China November 21, 2018. REUTERS/Yuyang Wang

Rear Admiral Karl Thomas, commander of Battle Force 7th Fleet, speaks to the media at a news conference on the flight deck of U.S. Navy aircraft carrier USS Ronald Reagan during its visit to Hong Kong, China November 21, 2018. REUTERS/Yuyang Wang

An anti-Vietnam protester picks up a model of Chinese People's Liberation Army Navy (PLAN) Type 054A Frigate FFG-575 Yueyang on a Vietnamese flag, as eggs are thrown by anti-Vietnam protesters, during a protest defending China's territory claim and condemning Vietnam's anti-Chinese protests, in Hong Kong May 19, 2014. Anti-Chinese riots in Vietnam last week have raised doubts about its commitment to foreign investment, the state-run China Daily newspaper said on Monday, as China reported it had evacuated about 4,000 people from its southern neighbor. The words on the frigate model (C) read as "Defend the Paracel Islands". REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST)

A model of Chinese People's Liberation Army Navy (PLAN) Type 054A Frigate FFG-575 Yueyang, is seen above a Vietnamese flag as eggs are thrown by anti-Vietnam protesters, during a protest defending China's territory claim and condemning Vietnam's anti-Chinese protests, in Hong Kong May 19, 2014. Anti-Chinese riots in Vietnam last week have raised doubts about its commitment to foreign investment, the state-run China Daily newspaper said on Monday, as China reported it had evacuated about 4,000 people from its southern neighbor. The words on the frigate model (C) read as "Defend the Paracel Islands". REUTERS/Tyrone Siu (CHINA - Tags: POLITICS CIVIL UNREST)

Labourers stand under a plastic sheet to take cover from the rain at a construction site of the three-storey D3 cafeteria built by the Broad Group in Yueyang, Hunan province April 24, 2012. The structure is an example of streamlined construction being pioneered by China's Broad Sustainable Building (BSB). Over the last decade China has seen one of the biggest construction booms in history to house a surging urban population and an expanding industrial sector. But with that construction have come worries about environmental destruction, waste and shoddy buildings. Zhang Yue, Broad Group's founder and chairman, argues that his buildings represent just the opposite. Picture taken April 24, 2012. To match story CHINA/INSTANT-BUILDING/ REUTERS/Terril Yue Jones (CHINA - Tags: BUSINESS EMPLOYMENT CONSTRUCTION REAL ESTATE SOCIETY)

Labourers install the steel frames of a construction site of the three-storey D3 cafeteria built by the Broad Group in Yueyang, Hunan province April 24, 2012. The structure is an example of streamlined construction being pioneered by China's Broad Sustainable Building (BSB). Over the last decade China has seen one of the biggest construction booms in history to house a surging urban population and an expanding industrial sector. But with that construction have come worries about environmental destruction, waste and shoddy buildings. Zhang Yue, Broad Group's founder and chairman argues that his buildings represent just the opposite. Picture taken April 24, 2012. To match story CHINA/INSTANT-BUILDING/ REUTERS/Terril Yue Jones (CHINA - Tags: BUSINESS CONSTRUCTION EMPLOYMENT REAL ESTATE SOCIETY)

Labourers flatten the concrete inside a module at a construction site of the three-storey D3 cafeteria built by the Broad Group in Yueyang, Hunan province April 24, 2012. The structure is an example of streamlined construction being pioneered by China's Broad Sustainable Building (BSB). Over the last decade China has seen one of the biggest construction booms in history to house a surging urban population and an expanding industrial sector. But with that construction have come worries about environmental destruction, waste and shoddy buildings. Zhang Yue, Broad Group's founder and chairman argues that his buildings represent just the opposite. Picture taken April 24, 2012. To match story CHINA/INSTANT-BUILDING/ REUTERS/Terril Yue Jones (CHINA - Tags: BUSINESS SOCIETY REAL ESTATE CONSTRUCTION EMPLOYMENT)

Chinese civil militia make a drainage ditch to divert water at a dyke
in Yongji township in Yueyang in China's southern Hunan province August
24, 2002. A peasant army of Chinese floodfighters plugged leaks on
Saturday in the vast network of dykes to prevent the brim-full Dongting
Lake from swamping the homes of millions as a flood crest bore down on
them. REUTERS/Claro Cortes IV

CC/RCS

Chinese villagers look for leaks near a dike in Yongji township in
Yueyang near the Yangtze River leading to Dongting Lake in China's
southern Hunan province August 24, 2002. A peasant army of Chinese
floodfighters plugged leaks on Saturday in the vast network of dykes to
prevent the brim-full Dongting Lake from swamping the homes of millions
as a flood crest bore down on them. REUTERS/Claro Cortes IV

CC/RCS

Chinese civil militia make sandbags at a dike in Yongji township in
Yueyang near the Yangtze River which connects to Dongting Lake in
China's southern Hunan province August 24, 2002. A peasant army of
Chinese floodfighters plugged leaks on Saturday in the vast network of
dykes to prevent the brim-full Dongting Lake from swamping the homes of
millions as a flood crest bore down on them. REUTERS/Claro Cortes IV

CC/RCS

Chinese civil militia make sandbags at a dike in Yongji township in
Yueyang near the Yangtze River which connects to Dongting Lake in
China's southern Hunan province August 24, 2002. A peasant army of
Chinese floodfighters plugged leaks on Saturday in the vast network of
dykes to prevent the brim-full Dongting Lake from swamping the homes of
millions as a flood crest bore down on them. REUTERS/Claro Cortes IV

CC/RCS

Civil militia make sandbags at a dike in Yongji township in Yueyang
near Yangtze River which connects to Dongting Lake in China's southern
Hunan province August 24, 2002. A peasant army of Chinese floodfighters
plugged leaks on Saturday in the vast network of dykes to prevent the
brim-full Dongting Lake from swamping the homes of millions as a flood
crest bore down on them. REUTERS/Claro Cortes IV

CC

Chinese boys swim near a flooded 5-metre electric post on the banks of
Dongting Lake in Yueyang in southern China, August 23, 2002. Floods in
hilly areas of the southern province of Hunan, where a million people
are trying to prevent Donging spilling over, had caused deaths but no
one had yet perished on the shores of the lake, top flood officials
said on Friday. REUTERS/Claro Cortes IV

CC/RCS

A young villager paddles on a tyre tube as he crosses a inundated paddy
field caused by Dongting Lake overflow in Yueyang in China's southern
province of Hunan August 23, 2002. Tens of thousands of people are
being evacuated from around China's swollen Dongting Lake as it
threatens to engulf millions, but officials see signs of winning the
battle against time. REUTERS/Claro Cortes IV

CC/CP

Chinese boys jump from sandbags to swim on flooded ricefields after an
enbankment burst at Dongting Lake in Yueyang in China's southern
province of Hunan August 23, 2002. Tens of thousands of people are
being evacuated from around China's swollen Dongting Lake as it
threatens to engulf millions, but officials see signs of winning the
battle against time. REUTERS/Claro Cortes Iv

CC/CP

A Chinese villager floats on a tyre tube while checking his fishing net
on a submerged paddy field caused by Dongting Lake overflow in Yueyang
in China's southern province of Hunan August 23, 2002. Tens of
thousands of people are being evacuated from around China's swollen
Dongting Lake as it threatens to engulf millions, but officials see
signs of winning the battle against time. REUTERS/Claro Cortes IV

CC/CP

A Chinese villager paddles a boat across a submerged paddy field near
Dongting Lake in Yueyang in southern China, August 23, 2002. Floods in
hilly areas of the southern province of Hunan, where a million people
are trying to prevent Donging spilling over, had caused deaths but no
one had yet perished on the shores of the lake, top flood officials
said on Friday. REUTERS/Claro Cortes IV

CC/RCS

A Chinese resident wades through floodwaters near a submerged house on
the banks of Dongting Lake in the suburbs of Yueyang in China's
southern province of Hunan August 23, 2002. Tens of thousands of people
are being evacuated from around China's swollen Dongting Lake as it
threatens to engulf millions, but officials see signs of winning the
battle against time. REUTERS/Claro Cortes IV

CC/CP