Yes, there are some night markets in Beijing that are open 24 hours a day. Night market refers to the market that is open at night. There are some night markets in Beijing that can provide all kinds of food and goods for purchase. For example, Dongzhimen Night Market, Wangfujing Night Market and Houhai Bar Street are all famous night markets in Beijing. These night markets usually open after 9 pm and last until 3 am or later. The night market is a part of Beijing's nightlife, which provides a place for residents and tourists to shop and enjoy food late at night.