Traditional Chinese Medicine has four diagnostic methods, namely 'inspection', listening, questioning, and palpation.
Among these, inspection is the foremost of the four diagnostic methods.
Therefore, it is of utmost importance.
It is said that 'to know by inspection is divine'.
In ancient times in Dragon Country, the medical sage Zhang Zhongjing's skills in inspection had reached an almost divine and sublime level.
How divine was he?
Back then, he predicted through 'inspection' that Wang Zhongxuan would develop eyebrows like caterpillars in 20 years, and then die six months later.
And indeed, it came true!
That's how divine his ability had become.
Through inspection, he could predict a person's illness and life or death 20 years in advance.
However, inspection is not as simple as what the literal meaning might suggest.
It is not just about diagnosing diseases from some superficial symptoms observed on a person.
That is just the most superficial part of 'inspection'.