Chi He could not speak until he was 400 years old, until one day he came to the highest sky in the world, and an articulate little boy asked him a bunch of questions, but he didn't understand a word he said. He misses home but can't go back.
Later, the little boy gradually taught him how to speak. He liked the boy very much and always liked to follow the boy wherever he went. He even called the boy brother obediently.
Later I found out that the boy was actually his younger brother and he was the older brother.
Intention: Some people care about the world, and some people prefer to live in a corner. Some people are in love, some people miss each other.