Photo taken on Nov. 20, 2020 shows technicians of State Grid Yanbian Power Supply Company repairing power supply lines in Dunhua of Yanbian Korean Autonomous Prefecture, northeast China's Jilin Province. Power supply has been affected due to extreme weather in Yanbian Korean Autonomous Prefecture recently. After thousands of technicians expedited maintaining the high-voltage wires, the power supply has been restored for over 160,000 households as of 11:00 a.m. on Nov. 22. (Photo by Gao Xusheng/Xinhua)

Photo taken on Nov. 20, 2020 shows technicians of State Grid Yanbian Power Supply Company repairing power supply lines in Dunhua of Yanbian Korean Autonomous Prefecture, northeast China's Jilin Province. Power supply has been affected due to extreme weather in Yanbian Korean Autonomous Prefecture recently. After thousands of technicians expedited maintaining the high-voltage wires, the power supply has been restored for over 160,000 households as of 11:00 a.m. on Nov. 22. (Photo by Gao Xusheng/Xinhua)

Photo taken on Nov. 20, 2020 shows technicians of State Grid Yanbian Power Supply Company repairing power supply lines in Dunhua of Yanbian Korean Autonomous Prefecture, northeast China's Jilin Province. Power supply has been affected due to extreme weather in Yanbian Korean Autonomous Prefecture recently. After thousands of technicians expedited maintaining the high-voltage wires, the power supply has been restored for over 160,000 households as of 11:00 a.m. on Nov. 22. (Photo by Gao Xusheng/Xinhua)