First, the title of the work is Loyalty. In the Ming Dynasty, Ding Yang saw the Complete Biography of the Loyalty and Righteousness of the Water Margin, and thought: "The loyalty of the Water Margin, the loyalty of the Water Margin."

Secondly, "loyalty" is the basic moral principle of Liangshan hero's action. On the apricot yellow flag hanging high in the water margin of Liangshan, there is a big word "for heaven" as the slogan of Liangshan uprising. In the feudal society of "the imperial power is given by heaven", the significance is obvious.

Third, a group of loyal ministers headed by Song Jiang was created. Especially Song Jiang became the embodiment of loyalty. Loyalty is for the emperor. Song Jiang's foolish loyalty is not only an insurmountable moral boundary for the author, but also a political and moral guarantee for the novel to be widely circulated in the past.

The profundity of the novel is that Song Jiang's "loyalty" was poisoned, which is undoubtedly a satire on the author's promotion of loyalty. If the "righteousness" advocated in The Romance of the Three Kingdoms is mainly characterized by gratitude, then the "righteousness" advocated in Water Margin is mainly characterized by drawing swords to help each other and getting along on an equal footing, which embodies the ideals and values of citizens in life.