Nine流派装置艺术

Quick answer：

Nine Schools of Installation Art refers to the artistic practices and styles that emerged during the Song Dynasty in China. These nine schools, each with unique characteristics, were recognized for their distinctive styles and techniques. They include the schools of Leshan, Dazu, Wutai, Yungang, Longmen, Baoguo, Lingguan, Longmen, and Yungang. These schools are significant in the study of Chinese art history and Buddhist art.