They all explain the origin of the calligraphy characters above.
(Huai. IV) should be collected from Huai Su's "Forty-Two Chapters",
(Sun. Shu) should be collected from Sun Guoting's "The Classic of Forty-Two Chapters" "Shu Pu",
(Huai. spell), it should be spelled or broken out with Huai Su's characters.
(Zhi.Pin), it should be spelled or split with the characters of Zhiyong.