Calligrapher Zhang Zhi has profound attainments and outstanding contributions in calligraphy. Zhang Zhi studied classics and history from childhood, studied calligraphy diligently, and practiced calligraphy without choosing paper and pen. Sometimes he dipped the rag in water to write on the stone, and sometimes he scratched on the table with chopsticks. Even the cloth and silk used to sew clothes at home were colored first and then dyed. But his writing posture is very exquisite, and he often waves his hair at the bronze mirror, so that he can clearly see his front and back through the reflection on the mirror.
In order to practice calligraphy, Zhang Zhi dug a West Weir Lake in Fiona Fang at home. After finishing his homework for a day, he went to the pond to wash the ink left on the inkstone and brush to prolong their service life. He washed and washed for a long time, and the clear water in the whole pond was dyed black. Later, people called practicing calligraphy "Linchi", which evolved from the story of Zhang Zhi learning books.