In accordance with the progress of translation into Chinese, it became necessary to collect and classify the sutras of the Chinese editions and distinguish the true Buddhist sutras from the false ones, so that at the end of the fourth century Doan SHAKU wrote "Shuri Shu-kyo Mokuroku (亡佚)," the first record of sutra, and at the beginning of the sixth century Soyu edited "Shutsu Sanzo Kishu (the Chu sanzang ji ji)."
漢訳事業の進行に伴い、訳経の収集や分類、経典の真偽の判別が必要となり、4世紀末には釈道安によって最初の経録である『綜理衆経目録』（亡佚）が、6世紀初めには僧祐によって『出三蔵記集』が作成された。