操觚染翰

Explanation: Gu, wood simple; John, long and hard Toba. Refers to the writing. 　　Source: Anonymous Song "lamp chat dream and commune": "Song of worship and more, is Caogu staining John; table into, was the king." 　　Examples: ~, Poet of the heart also; groan Zhang Yin period, the boys of the industry is also learning. ★ Ming Jang, "said Hanlin Academy to study"