The nickname "Linchi" of calligraphy is related to Wang Xizhi, a calligrapher in the Eastern Jin Dynasty. Wang Xizhi practiced calligraphy hard. After writing every day, he goes to the pond in front of his house to wash his pen and ink stone. After a long time, the water in the pond turned dark black, so people used "Linchi" to express their efforts to learn calligraphy.