A singer performs in Hongyadong scenic spot at night in Yuzhong District, southwest China's Chongqing Municipality, Sept. 9, 2019. The development of nighttime economy in Chongqing enriches citizens' consumption choices and attracts visitors. Nighttime economy refers to business activities between 6 p.m. (1000 GMT) and 6 a.m. (2200 GMT) in the service sector. (Xinhua/Tang Yi)