"The waves behind the Yangtze River push the waves before, and a new generation drives the old" comes from the old saying "Enlarge the sages". I don't know who said that.

It means: the waves behind the Yangtze River push the waves ahead, one step at a time, and each wave is better than the other. The new people in the world are changing from generation to generation in the footsteps of their predecessors. Metaphor means that things are constantly improving.

Honey, I'm very satisfied with the adoption.