What is the connotation of "snake" in Chinese traditional culture?

First of all, the snake is known as the "little dragon" in the Chinese zodiac, which shows its status in China's traditional culture.

In ancient times, the symbolism of the snake had two extremes, one representing brutality, cold-bloodedness, viciousness, secrecy, collusion, caution, etc., which can be seen in the idioms. On the other hand, the snake could also represent a king, a gentleman, etc.