Students training to be flight attendants hold books on their heads, chopsticks in their mouths, and papers in between their knees, as they take part in a standing posture practice at a vocational school in Shijiazhuang, Hebei province, China May 4, 2017. (Photo by Reuters/Stringer)

A man rides his loaded tricycle next to three schoolgirls in Shanghai on December 11, 2015. (Photo by Johannes Eisele/AFP Photo)

An elderly man uses a fan to shade himself from the sun as he walks in a public park in Beijing, Tuesday, June 7, 2016. Thursday marks the Duanwu Festival, a public holiday in China celebrated with outdoor activities including dragon boat races. (Photo by Mark Schiefelbein/AP Photo)

A man sits on top of a car as he is stranded on a flooded street in Tianjin, China, July 20, 2016. (Photo by Reuters/Stringer)

People walk during a polluted day in Shenyang, Liaoning province, March 31, 2016. (Photo by Reuters/Stringer)

A man makes traditional candy “Matang” in preparation for the upcoming Chinese Lunar New Year in Yuqing County, Zunyi, Guizhou Province, China, January 18, 2016. (Photo by Reuters/China Daily)

A security personnel keeps watch before the second plenary session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China on March 8, 2022. (Photo by Carlos Garcia Rawlins/Reuters)

Tibetan monks in ghoulish costumes perform during a ceremony to chase away the “demon king” to bring peace and happiness for the Tibetan New Year at the Yonghegong Lama Temple in Beijing, Sunday, February 19, 2023. The annual event has returned after China lifted all bans on public gatherings from the outbreak of COVID-19. (Photo by Andy Wong/AP Photo)