Photo taken on Nov. 15, 2019 shows the scene of a fire drill in Kunming, capital of southwest China's Yunnan Province. (Xinhua/Hu Chao)

Firemen simulate to put out fire during a fire drill in Kunming, capital of southwest China's Yunnan Province, Nov. 15, 2019. (Xinhua/Hu Chao)

Photo taken on Nov. 15, 2019 shows an unmanned aerial vehicle carrying relief supplies during a fire drill in Kunming, capital of southwest China's Yunnan Province. (Xinhua/Hu Chao)

Photo taken on Nov. 15, 2019 shows the scene of a fire drill in Kunming, capital of southwest China's Yunnan Province. (Xinhua/Hu Chao)

Firemen demonstrate rescue skill during a fire drill in Kunming, capital of southwest China's Yunnan Province, Nov. 15, 2019. (Xinhua/Hu Chao)