About 80 percent of the country will be affected by the cold wave. The temperature in most parts of central and east China is expected to drop by 10 degrees Celsius, while temperatures in some areas in north and south China will drop by 12 degrees. Pictures show monkeys gathering on a radiator to keep themselves warm at a zoo in Ji'nan, east China's Shandong Province, December 28, 2020. / CFP

Snow has accumulated on a road in Weifang, east China's Shandong Province, December 29, 2020. / CFP

Farmers in Yongzhou, central China's Hunan Province, cover the orange trees with plastic to protect the trees from the cold wave, December 28, 2020. / CFP

Snowplows work on the road in Urumqi, Xinjiang Uygur Autonomous Region, northwest China on December 27, 2020. / CFP