Subjects in Group A will receive 14 needles based on the TCM theory "Soothing liver-qi stagnation", all needles will be retained for 30 minutes. Acupoint combination: Taichong太衝 (LR 3), Ligou蠡沟 (LR 5), Zhongdu 中都(LR6), Xiguan膝關 (LR 7), Ququan曲泉 (LR 8), Zhangmen章門(LR13), Qimen期門 (LR14).