The night market is a market that engages in business activities at night. There may be selling groceries, clothes, food, barbecue, electrical accessories, games and almost everything. Night markets appeared in Song and Northern Song Dynasties. In the Northern Song Dynasty, the rulers explicitly allowed the night market in Tokyo (now Kaifeng City, Henan Province). It is often an important tourist attraction in tropical and subtropical countries, and it has become one of the important representatives of civilian life culture in many places in China. The famous night markets are Shilin Night Market, Raohe Street Night Market and Donghuamen Night Market.