This series was originally printed circa 18 separate books which were combined and rebound by EFEO, of which 6 [HN 0391, HN 0392, HN 0393, HN 0432, HN 0433, HN 0871 ] are found in the ISSI HN Hán Nôm collection. This digital series contains 2 of these books, HN 0432 and HN 0433.