What horse can't be ridden?

Ma Xu: This is a humorous question with a brain teaser.

Xu was the title of son-in-law by the ancient emperors of China. Also known as husband, husband, son-in-law and so on. Named after captain Xu. When Emperor Wu of the Han Dynasty was appointed, Ma was appointed as his deputy. Captain Xu is in charge of the second car. During the Three Kingdoms period, the State of Wei sealed the official position of Xu as a son-in-law. Later, Princess Anlu, the daughter of Du Yu of Jin State, and Princess Changshan, the daughter of Wang Ji (Wendi), were all sealed by Xu. After Wei and Jin Dynasties, the son-in-law added the title of Xu as a captain as usual, referred to as Xu for short, and was not a real official. In the future, Xu will be called the son-in-law of the Qing Dynasty, so that's the amount.

Brainstorming is mainly written in the form of questions and answers. A seemingly complicated question contains an unexpected simple answer, which makes people realize and then laugh. This book is of great enlightening significance for developing children's intelligence and creativity, enriching children's imagination and cultivating children's sentiments.

Brain broadly refers to thinking and thinking. A sharp turn refers to driving to another route when there is an obstacle in front that prevents the car from driving in a straight line. Usually, under special circumstances, it is necessary to leave the customary route quickly and take another route. Brainstorming 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.

Brainstorming originated in ancient India. Brainstorming is a series of complete comic jokes published by the culture of the times on 1989 12.06, which changed from the comic question on the previous page to the unexpected answer after flipping through it. At that time, there was a social craze in Taiwan Province Province, and all the streets and alleys were asking each other brain teasers, which evolved into a pattern of cold jokes and was later introduced to Chinese mainland.