《论衡·卷三·本性篇》
在外表露的则称之为阳，不表露的则称之为阴。 
形外则谓之阳；不发者则谓之阴。 
What is revealed on the outside is called yang, and what is not revealed is called yin.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 形外则谓之阳；不发者则谓之阴。  [/INST] What is revealed on the outside is called yang, and what is not revealed is called yin.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 形外则谓之阳；不发者则谓之阴。
user
What is revealed on the outside is called yang, and what is not revealed is called yin.
assistant