There is no doubt that it is a bad king. The slogan "Water Margin" stands for heaven, who is heaven, and the emperor also stands for heaven, that is, to uphold justice instead of the emperor.

Song Huizong is not a villain in Water Margin, but the main villains Gao Qiu, Cai Jing and Liang Zhongshu are all his ministers, which is unwise.