The Pre-Han and Han Concordance Series aimed at utilizing modern technology in the scholarly collation of ancient texts. Advanced computer programs were used in compiling the concordances in print for 103 titles, 9M characters of extant Chinese texts for the Pre-Han and Han period. With the aid of this invaluable research tool, innovative research of a higher order can be carried out. The Series consists of 65 volumes, up to now, 62 volumes have been published.