《旧唐书·列传·卷八十二》
有位叫孙季长的道士，给李抱真炼金丹，欺骗李抱真说： 服了可以成仙。 李抱真就任命他为幕僚。
有孙季长者，为抱真练金丹，绐抱真曰： 服之当升仙 遂署为宾僚。
A Taoist priest named Sun Jichang gave Li Baizhen pills and lied to Li Baizhen, saying: If you take them, you can become an immortal. Li Baizhen made him a staff officer.