  An early commentary that maximizes the religious import of the Laozi is the Xiang’er Commentary. Although it is mentioned in catalogues of Daoist works, there was no real knowledge of it until a copy was discovered among the Dunhuang manuscripts (S. 6825 in the Stein collection). The manuscript copy, now housed in the British Library, was probably made around 500 C.E. The original text, disagreement among scholars notwithstanding, is generally traced to around 200 C.E. It is closely linked to the “Way of the Celestial Masters” and has been ascribed to Zhang Daoling, the founder of the sect, or his grandson Zhang Lu, who was instrumental in ensuring the group’s survival after the collapse of the Han dynasty. A detailed study and translation of the work in English is now available (Bokenkamp 1997).