"Comrade Li Yuan, please explain the mechanism behind women's menstruation.",If one has blood deficiency, add Ejiao, Astilbe and Alisma to nourish blood and stop bleeding; if it is caused by blood heat, add Crane Herb, Rhei Radix et Rhizoma, Cirsium Arvense and Sanguisorba Officinalis to cool blood and stop bleeding; if it is caused by cold blood, add Artemisia Argyi carbonized, Ginger and Eucommia ulmoides for warming channels and stopping bleeding.,Li Yuan looked up at the sky. Two days ago, a sandstorm swept through the capital city, covering everything in a layer of yellow sand. But the sky was still a refreshing blue, making people feel clear-headed and invigorated.。