2. The classic chess game of the real dragon cracked (Yuan) Yan Defu and (Yuan) Yan. -Beijing: Unity Publishing House, 2005 (This book is the only Go book that has been circulated from the Yuan and Ming Dynasties to today for more than 600 years. The book includes the basic figures of life and death, such as road map, starting map, starting technique, straight three, four songs, flower picking five, divine art six and Jingui seven, as well as roller blinds, lotus horns and inverted lotus. )
3. Chess Classic [Monograph]/(Yuan) Yan Defu, (Yuan) Yan. -Lanzhou: Gansu Culture Publishing House, 2004
4. Chess Classics [Monographs]/(Yuan) Yan Defu and Yan Series; Lin Tianduo finishing; Lin Mian resumed school. -Shanghai: Shanghai Culture Publishing House, 1996
5. A new explanation of "Xuanxuan Qi Jing" [monograph]/Wang Runan's explanation. -Beijing: People's Sports Press, 1988
6. "Xuanxuan Chess Classic/(Yuan) Yan Zhangtian", by Yan Defu; Ryutaro Hashimoto solution (Japan); Translated by Chen Xianhui. -Taipei: World Heritage Publishing House, 1985.
7. Thirteen Classics [Ordinary Ancient Books] (Song Dynasty) is to be written.