Rescuers gather to take part in an earthquake emergency drill in Haikou, south China's Hainan Province, Nov. 25, 2020. The emergency drill features search and rescue, medical treatment, and epidemic prevention. (Xinhua/Guo Cheng)

Rescuers search in the ruins during an earthquake emergency drill in Haikou, south China's Hainan Province, Nov. 25, 2020. The emergency drill features search and rescue, medical treatment, and epidemic prevention. (Xinhua/Guo Cheng)

Rescuers practise medical treatment during an earthquake emergency drill in Haikou, south China's Hainan Province, Nov. 25, 2020. The emergency drill features search and rescue, medical treatment, and epidemic prevention. (Xinhua/Guo Cheng)

Rescuers gather to take part in an earthquake emergency drill in Haikou, south China's Hainan Province, Nov. 25, 2020. The emergency drill features search and rescue, medical treatment, and epidemic prevention. (Xinhua/Guo Cheng)

Rescuers operate a drone during an earthquake emergency drill in Haikou, south China's Hainan Province, Nov. 25, 2020. The emergency drill features search and rescue, medical treatment, and epidemic prevention. (Xinhua/Guo Cheng)