On the journey of self-realization, the establishment of recognition systems has never been an isolated modern proposition. When we look back at the long river of traditional culture, we will find that the wisdom accumulated over thousands of years has already laid a profound foundation for "how to understand people, oneself, and the world". From Confucianism's "introspection" to Taoism's "observation and restoration", from Buddhism's "perception" to traditional Chinese medicine's "observation, hearing, questioning, and cutting", many concepts in traditional culture are like the source of the identification system, providing us with ancient mirrors to observe our inner selves and distinguish external things.