《宋史·列传·卷二百一十六》
常常自号扶摇子，撰写《指玄篇》八十一章，阐述引导养生及使水银还成丹的事情。
常自号扶摇子，著《指玄篇》八十一章，言导养及还丹之事。
He often called himself the Wandering Immortal and wrote the eighty-one-chapter Guide to the Profound, which expounded on the principles of nourishing oneself as well as the process of transforming mercury into an elixir.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 常自号扶摇子，著《指玄篇》八十一章，言导养及还丹之事。 [/INST] He often called himself the Wandering Immortal and wrote the eighty-one-chapter Guide to the Profound, which expounded on the principles of nourishing oneself as well as the process of transforming mercury into an elixir.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 常自号扶摇子，著《指玄篇》八十一章，言导养及还丹之事。
user
He often called himself the Wandering Immortal and wrote the eighty-one-chapter Guide to the Profound, which expounded on the principles of nourishing oneself as well as the process of transforming mercury into an elixir.
assistant