Students and their parents walk to school in Beijing's Fengtai district on March 1, 2021. Cold weather, rain and snow meant people were wearing thick clothes outdoors. All kindergarten, primary and middle school students in Beijing started classes on campus for the spring semester March 1, the usual starting date.

Students walk to school to start their spring semester on campus in Beijing's Haidian district on March 1, 2021.

Students walk to school to start their spring semester on campus in Beijing's Haidian district on March 1, 2021.

Students sit for their first class of the spring semester at a school in Beijing's Haidian district on March 1, 2021. According to pandemic prevention and control measures, students have to wear masks in school.

Students sit for their first class on campus at a school in Beijing's Haidian district on March 1, 2021.