Everything in the world will go with the flow, and touching flowers refers to a random and accidental state of mind. For better or worse, just let nature take its course. Laughter is not a narrow sense of laughter, but belongs to the second half of the sentence, which means that many sufferings in the world come from inner shackles, and many diseases will be better as long as they are calm. Generally speaking, it is to advocate peace of mind, accept the status quo and accept your own state.