For example, Wang Bi wrote "Annotation of Zhouyi" which was an annotation for Hi-shi Eki (Mr. Hi's divination) and Ka An (He Yan) created "The Collected Annotations of the Analects of Confucius" (sound of Seishi - academic traditions starting from Seishi era).
王弼は費氏易に注して『周易注』を作り、何晏（かあん）は『論語集解』を作った（正始の音）。