[Pinyin] rù mù sān fēn
[Interpretation] According to legend, Wang Xizhi wrote on the board, and when the carpenter carved, he found that the handwriting penetrated into the board for three minutes. Describe that calligraphy is very powerful. Nowadays, the problem of metaphor analysis is very profound.
[Source] Zhang Tang Huai Guan's Book Breaking Wang Xizhi: "Wang Xizhi's book is willing to be published, and the work is cut, and the pen is three points."