Historical Records, Spring and Autumn Annals, Hanshu, Houhanshu, etc. When consulting historical materials, we must look up historical materials handed down from ancient times such as Historical Records, Spring and Autumn Annals, Hanshu and Houhanshu. These historical materials are in-depth studies of history and can help us better understand history. When consulting historical materials, we must first determine the time range to be studied, and then choose appropriate historical documents, or we can refer to historical facts, documents and archaeological achievements at that time.