Traditional festivals and folk customs have been lost and diluted to varying degrees in modern society. How to treat this phenomenon?

Losses are actually changing, and they will not develop if they remain unchanged. Of course, the essence of a nation's traditional culture still needs to be protected, but on the whole, society is developing and human civilization is progressing, so everything should go with the flow. When Einstein invented the theory of relativity and won the Nobel Prize, he said with emotion: "From this moment on, this theory began to die." This is the truth. There is nothing immutable in the world, and today's theory is likely to be tomorrow's fallacy. Too much nostalgia will hinder development.