Dragons give birth to dragons and phoenixes, and mice give birth to sons who can dig holes.
Haozi happened to be born in the year of the rat, and his name coincidentally sounds like "rat". Over time, friends in the world started calling him "rat, rat".
Birds of a feather flock together, but it happened that the mouse hugged a phoenix egg. Although he couldn't figure out how he knew such a phoenix egg, he just knew it.
Even if we don't get along, we are still good friends who have known each other for ten years...