The lower secret hospital, located north of Chengguan Xingfu Road, Lhasa, was built in 1433, more than 500 years ago, covering an area of about 2,100 square meters (10.6 temple). The lower secret hospital, Tibetan called "Jumai Zhacang", the main buildings include the Jingtang, the Buddhist temple, the defense Jingchang, the printing room, etc., four walls are painted murals, the content is mostly Gelu stories, is the lower area of the the law of the law, that is, one of the highest institutions of the Tibetan Buddhist Gelu School, the internal restrictions on taking pictures.