佛祖歷代通載 16.4

16.4

（二）　八月。遣中使詣天台採求靈藥詔道士劉從政。入宮資質仙事。署光祿卿。別號升玄先生。

(2) In the eighth month, an imperial envoy was sent to Tiantai to search for numinous herbs. An edict ordered the Daoist Liu Congzheng to enter the palace to provide consultations on matters of immortality; he was appointed Chief Minister of the Court of Imperial Entertainments and additionally titled Master Shengxuan.