What do itch and Fu Heng's calligraphy mean?

Itching refers to the phenomenon that strokes are broken, broken and scratched in the process of writing because of too many strokes or irregular strokes in calligraphy works.

In Fu Heng's calligraphy, the itch mark of 100 refers to the phenomenon of breaking, breaking and scratching when the writer writes 100, which will affect the overall aesthetics of calligraphy works. In calligraphy, the itch mark of 100 is considered as the embodiment of calligraphy level. A master calligrapher can write 100 without the itch mark.