If a Chinese person invite you to a casual meal at 10 in the evening, it’s perfectly normal. In some parts of China such as Guangdong province，people enjoy an additional meal after supper, which is referred to as yexiao. There are plenty of restaurants, street food stands that provide special food for late meals. Unlike in most western countries, shopping malls and department stores in China have a longer opening time, normally till 9 to 10 p.m. Late meals usually starts from 10 p.m. till 3 a.m. It is common for people to attend social activities followed by a late meal afterwards.