A customer purchases beverage in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

A man sings at a Karaoke bar in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

A customer receives temperature checking before entering into a Karaoke bar in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

A staff roasts meat at a barbeque restaurant in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

Customers enjoy meals at a barbeque restaurant in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

A man sings at a bar in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)

A staff serves food at a hot pot restaurant in Jiangbei District of Chongqing, southwest China, March 23, 2020. Under strict measures taken to fight against the COVID-19, Chongqing has reopened bars, restaurants and snack vendors to citizens to boost its "night-time economy" in an orderly manner. (Xinhua/Wang Quanchao)