This is a famous saying from ancient philosophy, which means "all things are simple at the beginning, but they become complex in the end." Among them, "dao to simplicity" means that the highest principle is simple, while "evolution to complexity" means that the development and change of things are from simple to complex.

This sentence emphasizes that the development and change of things is from simple to complex, not the other way around. It warns people to pay attention to the essence and original state of things and not to be confused by superficial complex phenomena, because the more complex things are on the surface, the simpler their internal essence is.