Cast of Twelve Letters CDrama Cast of the Chinese Drama Twelve Letters Zhou YiranTang YixunMain Role Wang YingluYe HaitangMain Role Zheng He Hui ZiYu NianSupport Role Ren YoulunShen ChengSupport Role Jia HongxiaoLi ChadongSupport Role Chen HaolanTan XinSupport Role Lin XinyiWang ManyuSupport Role Wang ShuoShen XiaojunSupport Role Cao YixinSun MiaomiaoSupport Role