跑龙套

Explanation: Originally referred to the drama took the flag to do pawns of the role of metaphor in human hands after doing irrelevant things. 　　Source: Shen, "utility man" utility man on stage is no fixed mandate, as the role of Shanghai names do not usually reported, although the text of each play or Zhaizhu general appearance, he had to make a few appearances transfer front, but also serious, not words do not laugh, always act according to the rules, and then only reverent and respectful on both sides of the sub-station. " 　　Examples: You remember, when the art troupe in a show called me to sing flat ~. ★ Deng Youmei "female team who catch the" three