Hi, boys and girls! Welcome to our museum (博物馆). It's free. You don't have to give money. But we have some rules for you. Please remember them and do what I say. First, don't have food or drink here. You may make our museum dirty. Second, you can take photos here, but don't touch (触摸) the things here. Third, keep quiet in the museum. Don't talk loudly. Fourth, the museum is not open (开门) after five o'clock in the afternoon. Please leave before five. Have a good time here! Thank you.