Xunzi (荀子) grasped the existence of human beings from two points of view, Xingeshuo (性悪説) and Huaxingshuo (化性説). In his thoughts, where Xing (性) is not immutable substantial existence, but mutable relative existence, Xingeshuo (性悪説) is a strategy to deconstruct Mengzi (孟子)'s Xingshanshuo (性善説), and to lead people to the revolutionary act of self-fashioning.

Huaxingshuo (化性説), on the other hand, is a strategy to deconstruct Xingeshuo (性悪説), and it insists that people should fashion themselves by changing their own Xing (性), which is inherently evil, by virtue of learning and environments.

In this act of Huaxing (化性), or self-fashioning, man's interior is structured according as the mind controls Xing (性) or his desiring body under the rules of Li (礼). Moreover, Huaxingshuo (化性説) reveals that man is the subjective existence who can fashion themselves both by his efforts and by the influence of his environments, and ultimately can possess such Lideshenti (礼的身体) as Shengren(聖人) has.