Pedestrians are thirsty, and it is easy to choke if they drink too fast, so they don't drink water in order to make people drink too fast. There is a leaf that will make people blow it away when drinking water, then it will float over and blow it again when drinking water, so as not to choke.

There is actually a part behind this cartoon. In autumn, there are no leaves available, so the heroine puts a hair in the water. .............................................................................................................................................