Little Flame was Mu Qianyu's Vermillion Bird. It is said that she was her life's contract beast: an existence akin to her second half. Although Little Flame was a contract beast, she was no different from Mu Qianyu's sister. She was even more close to the magical bird compared to her real twin, Mu Bingyun.
She grew to like Lin Ming the moment he gave her meat to feed on, thus the nickname of Barbeque Boy. During that time in Thundercrash Mountain when Mu Qianyu and Little Flame had encountered trouble, Lin Ming had looked after Little Flame, even cooking up some deer meat for him to eat. In the relatively long life of a Vermillion Bird, Little Flame was only a child and still somewhat naïve and innocent. Although Lin Ming had only known Little Flame for a brief period of time, he still had a very good impression of this silly and foolish Vermillion Bird.