What is a baby dragon key?

Nuo Nuo's younger brother. "Dragon" is a series of novels created by writer Jiangnan, and began to be serialized in fiction painting on June 5438+ 10/. The key in the novel is just a baby, who looks only a few months old, with a nipple in his mouth, wearing a jumpsuit with large and small cows printed on it, and only a few sparse fetal hairs on his head. He is Nuo Nuo's younger brother, a baby who will never grow up.