Liu Xing (刘星), portrayed by Zhang Yishan, is the son of Liu Mei. He is a rather poor student (especially at chemistry), but is quite witty and tactful. The resident troublemaker of the home, he receives most of the blame from his parents. Apart from that, he is sporty (both athletic and acrobatic), chivalrous, and always filled with ideas and advice for others (both good and bad).
