A staff member measures temperatures of passengers at a road checkpoint in Datong Hui and Tu Autonomous County, Xining, northwest China's Qinghai Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus. (Photos: Xinhua)

A staff member disinfects a vehicle at Zham Pass of Nyalam County, southwest China's Tibet Autonomous Region, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A doctor demonstrates how to wear mask correctly at Nanchang West Railway Station in Nanchang, east China's Jiangxi Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A staff member hands out leaflets on prevention and control of the novel coronavirus to a local villager in Datong Hui and Tu Autonomous County, Xining, northwest China's Qinghai Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

Staff members measure temperatures of passengers at Nanchang West Railway Station in Nanchang, east China's Jiangxi Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A staff member examines a vehicle at Zham Pass of Nyalam County, southwest China's Tibet Autonomous Region, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A villager disinfects a vehicle before it enters a village in Datong Hui and Tu Autonomous County, Xining, northwest China's Qinghai Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

Staff members measure temperatures of passengers at an expressway exit in Hefei, east China's Anhui Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A staff member disinfects a market in Hangzhou, east China's Zhejiang Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

Staff members measure temperatures of passengers at Beijing Capital International Airport in Beijing, capital of China, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A staff member works at a workshop of disinfectant in Chengdu, capital of southwest China's Sichuan Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A staff member measures temperatures of people visiting the West Lake in Hangzhou, east China's Zhejiang Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

Staff members measure temperatures of passengers at an expressway checkpoint in Yanchi County, northwest China's Ningxia Hui Autonomous Region, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.

A worker fills barrels with disinfectant at a company in Lanzhou, northwest China's Gansu Province, Jan. 29, 2020. Various measures are taken across China to combat the novel coronavirus.