Because Mo Yan told the truth. In addition, the education level of China people is generally not high, and the people's wisdom is not yet civilized. When one day a person stands up and tells the truth but is trampled under his feet, then the person who tells the truth will be regarded as scum, an alien, or even a sinner who does not love this nation. Isn't it our tradition to flatter, bully and flatter? Mo Yan, on the other hand, runs counter to the disease and speaks frankly about his own shortcomings. Therefore, he is regarded as a scum by a group of "patriots" and a disgrace to literature.