All day is open, but if you go at night, there is almost nothing to see. Many exhibition halls and cafes and restaurants have already closed. If you are lucky, you can go there at night when there are activities in 798, and the night of 798 has a unique feeling, but I advise you not to go there on weekdays at night because there is nothing to see. There are also some small gift stores, toy stores, and boutiques to browse. 798 usually has events at night, such as clothing shows, DJ festivals, car shows, and other festivals.