A Chinese woman wears a mask to protect from particles blown in during a sandstorm as she walks in the street on May 4, 2017 in Beijing, China. Sandstorms are common in northern China during the spring season and are caused when heavy winds from Mongolia in the north brings sand and pollutants that can blanket Chinese cities and cause air quality to deteriorate. (Photo by Kevin Frayer/Getty Images)

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 boat is stranded on Poyang Lake in Lushan City, China during low-water season on November 3, 2016. (Photo by Xinhua/Barcroft Images)

“Left behind” children Luo Hongni, 11 (L) and brother Luo Gan,10, carry flowers to be used as feed while doing chores in the fields on December 18, 2016 in Anshun, China. Like millions of Chinese children, the four Luo siblings are being raised by their grandparents in rural China as their parents left to find work in urban areas. (Photo by Kevin Frayer/Getty Images)

A tourist is seen at the Caka Salt Lake in Wulan County, northwest China's Qinghai Province, September 4, 2020. (Photo by Zhang Long/Xinhua News Agency)

Zhou Xiaoxuan, center, weeps as she speaks to her supporters upon arrival at a courthouse in Beijing, Wednesday, December 2, 2020. Zhou, a Chinese woman who filed a sexual harassment lawsuit against a TV host, told dozens of cheering supporters at a courthouse Wednesday she hopes her case will encourage other victims of gender violence in a system that gives them few options to pursue complaints. (Photo by Andy Wong/AP Photo)

People play with toy guns outside a bar at night, almost a year after the global outbreak of the coronavirus disease (COVID-19) in Wuhan, Hubei province, China on December 11, 2020. (Photo by Aly Song/Reuters)

Vogue dancer Xiong Daiki, 22, takes a video of his team to promote vogue dancing, almost a year after the global outbreak of the coronavirus disease (COVID-19) in Wuhan, Hubei province, China on December 15, 2020. During lockdown, Daiki, his students and friends practiced at home in their bedrooms, staying in touch by sharing videos of new dance routines. (Photo by Aly Song/Reuters)