Photo taken on Nov. 11, 2020 shows a set of medical equipment displayed during the Second World Health Expo held in Wuhan, capital city of central China's Hubei Province. The 4-day Second World Health Expo kicked off here on Wednesday, with a focus on displaying cutting-edge science and technology in the global health industry. (Photos: Xinhua)

A visitor walks past an exhibition area of anti-epidemic materials during the Second World Health Expo held in Wuhan, capital city of central China's Hubei Province, Nov. 11, 2020. The 4-day Second World Health Expo kicked off here on Wednesday, with a focus on displaying cutting-edge science and technology in the global health industry.

Visitors look at medical equipment displayed during the Second World Health Expo held in Wuhan, capital city of central China's Hubei Province, Nov. 11, 2020. The 4-day Second World Health Expo kicked off here on Wednesday, with a focus on displaying cutting-edge science and technology in the global health industry.