Occasionally an additional four instruments, the xiangzhan, sikuai, jiaoluo, and shuangzhong, are included in a performance, and when a particularly big group has been assembled one may also see musicians playing the aizai and pinxiao.
有時加入響盞、四塊、叫鑼與雙鐘四種敲擊樂器，叫「下四管」。