The first step of confinement is lochia detoxification (decidua and blood at the placenta implantation) in the uterus. Expelling lochia not only remove blood stasis, but also produce ne blood, it helps to repair of postpartum uteras and the endometrium. Breastfeeding will get smoother and boost up milk sectretion. If the lochia slit up in the uterus, the recovery of the uterus will ne affected, vand the pain during contractions will be aggravated. At the same time, it will cause blood deficiency and cold syndrome, such as poor blood flow, pale complexion, dizziness, dark lips and tongue, cold hands and feet, pain and numbness, late menstruation, menstrual blood low purple, menstrual bleeding, dysmenorrhea and amenorrhea.