Many people think that dog blood at the first glance of the introduction, here, I say, this is not dog blood, but a step of foreshadowing, you will know if you continue to read, it is a foreshadowing made for the back, of course, this foreshadowing is not a slap in the face, but about the main line of the book.

As long as you read it, you will know that the main line of this book will be slowly exposed from the later plots.

It's inconvenient to reveal too much content, so everyone knows that the beginning is not dog blood.