② Valley: Huang Tingjian, Lu Zhi, a Taoist priest in the Valley, was one of the "four great calligraphers in the Song Dynasty". The following "Qian Mufu" and "Shi" are names.
③ Shao Sheng: Zhao Xunian, Song Zhezong.
④ Fuling: Place name.
⑤ Huai Su: A great calligrapher in Tang Dynasty, famous for Weeds. The existing book readme has a great influence on later generations.
⑤ ⑤: Same as ⑤ ⑤.
⑦ True: True: