Shusin, a disciple of Sha Ryosa, brought together Shosu-eki (graphic and mathematical divination) such as "Kokyokukeiseisho" (Kogyoku future occurrence book) by ShoYo (Shao Yong) and "Tsusho" (almanac) by Shu Ton-i (Zhou Dunyi), and Giri-eki (ethics and philosophy divination) such as "Tei's annotation of I Ching" and Cho Sai's (Zhang Zai) "Seimo," and wrote "Kanjoekiden," to counter the art of divination led by Anseki O (Wang Anshi) and Su Shi.
謝良佐の弟子である朱震は邵雍の『皇極経世書』、周敦頤の『通書』といった象数易と『程氏易伝』や張載の『正蒙』といった義理易を総合して『漢上易伝』を著し、王安石や蘇軾の易学に対抗した。