Professor YOU Zhao-ling skillfully uses vaginal four-dimensional color doppler ultrasound to classify the abnormal conditions of endometrium as ‘endometrial dysfunction'. She believes that the pathogenesis of this disease is ‘kidney deficiency and blood stasis, thoroughfare and conception channels injury', which is closely related to the spleen, liver and heart. On this basis, we advocate the ‘Seven principles of recuperating endometrium by YOU': treating endometrium for diseases, relaxing endometrium for pressure, converging endometrium for...