Visit with ID card, closed on Monday, open at 8:30-16:30 on weekdays and 9:30-15:30 on festivals. Must arrive half an hour before closing. Visitors can not find the opening and closing time online. I write here for your convenience. I have made three trips in vain, one at 4:00 p.m., and the other at 3:00 p.m., because it is a festival, and the third time I went to catch up with Monday. Don't run in vain like me. The popular science hall inside is quite beautiful, suitable for children.