Listening to the rain all night, a cold pond with a sword. One body follows the wind, one body is given a clear spring. A close friend, a sigh. People's hearts are treacherous, right and wrong are confused, and black and white are confused into gray. In this dark and turbulent world, there are still a few people who can clearly distinguish between right and wrong. I'm too lazy to write a summary, why don't you just read the main text (?)