Nourish yang in spring and summer and yin in autumn and winter. Shentang is the only fat soup and the first prescription for nourishing yin, while Guipi Pill is the prescription for nourishing heart, spleen, yin and blood. "Those who are good at nourishing Yang, seek Yang in Yin, be good at nourishing Yin, and seek Yin in Yang". Zheng Qinan said, "People today don't understand this principle. They see yang deficiency and focus on medication, but they don't know the kidney. " At the sight of yin deficiency, medication focuses on the kidney and I don't know the center of gravity. "Ginseng soup is a good way to drink Guipi pills and nourish yin from winter to the sun.