Ignorance does not mean that there is no learning. Ignorance and no learning are two concepts. Emperor Song Huizong of the Northern Song Dynasty was captured by Jin Bing and taken to the northeast, where he sat and watched the sky and died there. You said that he did not learn. The words are well written, the words are well written, and the drawing is also very good. He is a great talent. But Song Huizong was ignorant, so he talked about a small thing. Song Huizong was a dog. After he became emperor, he ordered the whole country not to Dogs are allowed to eat. Chinese people have eaten dogs since ancient times, and now they are not allowed to eat dogs. What does this text mainly tell us? ['Power and Ignorance.', 'Social management must have a "check and balance" mechanism.', 'The aspirations of any leader are asymmetric.', 'Leaders need to adjust and change strategies in a timely manner.']