The hand-copied books of ancient scholars made great contributions to supplementing and correcting the ancient books and records and helped to preserve and hand down to the following generations those valuable ancient books and records.

Zhang Yuanji is our country modern times important literature scientist, he strongly manifests in the literature study on achievement and the contribution in his two all kinds of books problem solving table of contents: namely <Baolitang Song dynasty block-printed edition Book Record> and <Hanfenlou Ashes Book Record>.