Brainstorming, the English name is Brain Twister. Originated in ancient India. It means that when thinking encounters special obstacles, you should quickly leave the habit of thinking and think about the problem from other aspects. Now refers to some intellectual questions that can't be answered by the usual way of thinking.
Its classification is relatively broad: there are educational, funny, mathematical and adult categories. It is not only a way of entertainment, but also a popular word game. Deeply loved by children, it is used to exercise brain thinking.