Eucommia ulmoides Oliv Warming and tonifying kidney yang is mainly used to treat cold hands and feet, chills, backache, lethargy, fatigue, nocturia, long and clear urine, impotence and nocturnal emission; Achyranthes bidentata, relaxing channels and activating collaterals, strengthening tendons and bones, is mainly used to treat weakness of muscles and bones, soreness of waist and knees, obstruction of cold and dampness, and retention of wind and evil; Pericarpium Citri Tangerinae is mainly used for relieving cough and resolving phlegm.