People get together at a restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]

Artists perform at a restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]

People have dinner at a restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]

People have dinner at a restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]

People enjoy meals at a musical restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]

A man cleans up tables at a restaurant in Shanghai on May 31, 2020. [Photo/Xinhua]