What kind of book does Li Zhuowu think the Water Margin is?

Li Zhuowu thinks that Water Margin is not only a book of resentment, but also a fast book, that is, a book to express resentment and vent anger.

He wrote in Li Burning Books, Volume III, Preface to the Loyalty of Water Margin:

The person who wrote Water Margin was very angry. Since the song dynasty, there has been no dispute, the crown is against, the great sage is below, and greed is above. Training leads to the land of the wilderness and the land of the Central Plains. In an instant, the monarch was still in the hall, willing to kneel in front of the dogs and sheep. Stone and Luo are all yuan, and the heart is in Song Dynasty. Although I was born in the first day of Yuan Dynasty, I was really angry with Song Dynasty. It is the inauguration ceremony of two emperors in the north. It is said that the Liao Dynasty was broken to vent their true anger. Anger crossed the south to bring peace, saying that Fang La would be destroyed to vent its anger. Who cares about the tuyere? Then the strongmen who gathered in Liangshanpo the day before yesterday also wanted to be loyal. Therefore, Shi and Luo Ergong passed on Water Margin and renamed it with loyalty.