嬉笑怒骂，皆成文章

Explanation: Refers to the informal theme of form, any play, both as Acme. 　　Source: Song Huang Ting, "Su was really like" one of the east slope of the wine flute of Red Cliff, the subject of ridicule, all into a post. " 　　Examples: Dongpo ~; but a moment of prosperity and language, words can not harm intended. ★ Qing Yuan Mei, "With the Garden Poetry" VII