Soldiers stand in formation at Tiananmen Square after an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping stands as he is applauded during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Veterans and soldiers take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

A general view shows an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping and Premier Li Keqiang take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

People arrive during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Veterans arrive during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Veterans arrive during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Veterans arrive during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping and Premier Li Keqiang take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

A minute of silence is observed by China's President Xi Jinping and Premier Li Keqiang, together with other participants, during an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

A minute of silence is observed by China's President Xi Jinping and Premier Li Keqiang, together with other participants, in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping and Premier Li Keqiang arrive to take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping speaks while taking part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping and Premier Li Keqiang take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping and Premier Li Keqiang take part in an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping arrives for an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

China's President Xi Jinping arrives for an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation at Tiananmen Square before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation at the Great Hall of the People before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers walk in formation outside the Great Hall of the People before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers walk in formation outside the Great Hall of the People before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation at Tiananmen Square before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation at Tiananmen Square before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers march at Tiananmen Square before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation in front of the Great Hall of the People before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers stand in formation at Tiananmen Square before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

Soldiers pose for photos while standing in formation in front of the Great Hall of the People before an event marking the 70th anniversary of the Chinese People's Volunteer Army's participation in the Korean War at the Great Hall of the People in Beijing, China October 23, 2020. REUTERS/Carlos Garcia Rawlins

U.S. Gen. Robert Abrams, commander of the United Nations Command, Combined Forces Command, and United States Forces Korea, delivers a speech during the commemorating ceremony for the U.N. Forces Participating Day in the Korean War at the border village of Panmunjom in Paju, South Korea July 27, 2020. Ahn Young-joon/Pool via REUTERS

A man wearing a mask to prevent the spread of the coronavirus disease (COVID-19) attends a ceremony to commemorate the anniversary of the United Nations (UN) Forces' participation in the Korean War, in Seoul, South Korea, July 27, 2020. REUTERS/Kim Hong-Ji

War veterans wearing masks to prevent the spread of the coronavirus disease (COVID-19) attend a ceremony to commemorate the anniversary of the United Nations (UN) Forces' participation in the Korean War, in Seoul, South Korea, July 27, 2020. REUTERS/Kim Hong-Ji

Members of a military band perform during a ceremony to commemorate the anniversary of the United Nations (UN) Forces' participation in the Korean War, in Seoul, South Korea, July 27, 2020. REUTERS/Kim Hong-Ji

A war veteran wearing a mask to prevent the spread of the coronavirus disease (COVID-19) salutes to the national flag during a ceremony to commemorate the anniversary of the United Nations (UN) Forces' participation in the Korean War, in Seoul, South Korea, July 27, 2020. REUTERS/Kim Hong-Ji

Members of a military band perform during a ceremony to commemorate the anniversary of the United Nations (UN) Forces' participation in the Korean War, in Seoul, South Korea, July 27, 2020. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY

A dove is seen during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

A dove is released during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Doves are released during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY

A South Korean war veteran salutes during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Actors reenacting the Korean War salute during a ceremony commemorating the 70th anniversary of the war, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Actors wait to reenact the Korean War during a ceremony commemorating the 70th anniversary of the war, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

South Korean soldiers hold up flags of countries that fought in the Korean War during a ceremony commemorating the 70th anniversary of the war, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Actors wait to reenact the Korean War during a ceremony commemorating the 70th anniversary of the war, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Actors wait to reenact the Korean War during a ceremony commemorating the 70th anniversary of the war, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

A South Korean war veteran salutes during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

South Korean war veterans attend a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

South Korean war veterans attend a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

South Korean war veterans attend a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

A South Korean war veteran holds the national flag during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji