Thus the ten gates are compleate and perfect , just as the Hua － yen ching preaches . The remaining broad meaning is discriminated like ( it is in ) the sutras and sastras , the commentary , ( Fa － chieh p ' in ) ch ' ao , ( Hua － yen ching nei chang － men teng tsa －) k ' ung － mu ( chang ) and ( Hua － yen wu － shih ) wen － ta [ of Chih － yen ] . The Ilsûngpôpgye diagram joined with the poem in a seal , depends on the Hua － yen ching and the Shih － ti lun 十地論 ( Dâšabhûmikašâstra ) to express the essential themes of the perfect teaching , and was recorded on the fifteenth day of the seventh month of the first year of the Tsung － chang era [ 27 th August 668 ] .