-Lu Songdian's Ya Ya is quoted from Mozi.

Forrest Gump: Great. The general idea of these two sentences is that the pedicel of melon is bitter and everything in the world is not perfect.

The advantages and disadvantages of everything exist at the same time, but there is no absolute perfection. This is the relativity contained in the thing itself. Only by understanding this point can we fully and profoundly understand the world without falling into absoluteness and one-sidedness.