"Yixue Qimeng Yijain" is a five-volume work authored by Han Bangqi during the Ming dynasty. Han Bangqi, whose courtesy name was Rujie, was a native of Chaoyi. He passed the zhengde wucheng imperial examination and held the position of Minister of War in Nanjing. He was posthumously honored with the epithet "Gongjian." His life and achievements are documented in his biography in the "History of the Ming Dynasty."

"Yixue Qimeng Yijan" is an elaboration and explanation of the ideas presented in Zhu Xi's "Yixue Qimeng" (启蒙). The work is divided into five volumes, each focusing on a specific aspect of the study of the I Ching (易經):

1. Volume One: Ben Tushu (本圖書) - This volume discusses the fundamental diagrams and texts, expanding on the teachings of Shao Yong with detailed illustrations and explanations.

2. Volume Two: Yuan Guhua (原卦畫) - This volume delves into the origins and principles of the hexagrams, again using Shao Yong's theories and providing detailed diagrams.

3. Volume Three: Ming Shice (明蓍策) - This section explains the ancient divination methods using yarrow stalks and addresses the common errors in the two latter changes not being hung.

4. Volume Four: Kao Zhanbian (考占變) - This volume describes the traditional methods of divination involving unchanged and sequentially changing hexagrams.

5. Volume Five: Qi Zhan (七占) - This final volume introduces new methods for divination when two, three, four, or five hexagrams change, while maintaining the traditional methods for unchanged and fully changed hexagrams. The hexagram diagrams presented in this volume follow the pattern of one hexagram transforming into sixty-four hexagrams, similar to the approach found in Jiao Yanshou's "Yi Lin" (易林).

While the graphical representation of the hexagrams in "Yixue Qimeng Yijin" resembles that of the Han dynasty scholars, its philosophical foundation is rooted in the Neo-Confucian interpretations of the Song dynasty. This work is a significant contribution to the study of the I Ching, blending traditional and innovative approaches to divination and interpretation.

References

• 《四庫全書總目提要·卷5 經部·易類五》

《易學啟蒙意見》

《易學啟蒙意見》，明韓邦奇撰，全書共五卷。韓邦奇，字汝節，為朝邑人，正德戊辰年進士，曾任南京兵部尚書，謚號恭簡，其生平事跡詳載於《明史》本傳。

《易學啟蒙意見》一書，主要闡述了朱熹《易學啟蒙》中的理論，並加以深入解說。第一卷為《本圖書》，第二卷為《原卦畫》，兩卷皆推演邵雍的學說，並以詳細的圖解方式加以說明。第三卷為《明蓍策》，發明古法，並附論近世後兩變不掛之誤。第四卷為《考占變》，敘述了六爻不變及六爻依次變化的舊例。第五卷為《七占》，涵蓋了六爻不變、六爻全變及一爻變的情況，並對二爻、三爻、四爻、五爻變的情況另立新法，以占卜解讀。

《易學啟蒙意見》中所列的卦圖，皆以一卦變化為六十四卦，此點與漢代焦延壽的《易林》相同。然而，其理論宗旨則遵循宋代儒學的《易》學觀，而非漢代儒學的《易》學傳統。此書在《易》學研究中佔有重要地位，對於理解宋明理學中的《易》學思想具有重要參考價值。