Today, the cooling wind is very strong, and not many people come to the Science and Technology Museum. At last, the experience exhibits in the Museum have the chance to try manually. In the past, there were always crowded small pots of friends. Adults had no chance at all. I visited the exhibition hall on the second floor before. This time I mainly saw the water exhibition hall on the third floor. The rainbow water absorber clock is the most impressive one. It changes every minute.