Because his sister is an actress in Beijing. His sister recommended him to director Zhang Yimou, and he became an instant hit after playing Golden Flower. Later, his sister learned that the tennis prince was short of actors and sent Michael's resume to the director. There were no candidates at that time. After almost a month, she found Jie Jun's sister's email in the reception room, but found Jie Jun. In addition, he is very temperamental and not very tall, which is very consistent with the image of dragon and horse in the animation, so the director found him and asked him to play the tennis prince.