abstract:Xisi () literally, the "Western Four" or the "Western Quadrangle", is the name of an intersection and surrounding neighborhood in Xicheng District, Beijing. Xisi, at the intersection of what is now Xisi Avenue and Fuchengmen Inner Avenue, dates to the Yuan Dynasty and was named after the four paifangs, Chinese sign gates, that marked the location.
Theoreticalpart: Classics such as: "The Liuhe classic", "Ninethesis", "7fistsand 14 parts - usage methods", "Neigong SiJing", "Xi Sui Jing", "Yi Jin Jing", "Quanshu Yun Yi" and others.