●Ⅰ.The Mountain Resort was Built for Temporary Stays of Emperors and Consolidation of Borders Ⅱ.The Principle was Set by Imperial Edict for the Construction in the Area Richly Endowed by Nature Ⅲ.Appropriately Planned, the Mountain Resort Materialised the Idea of Gathering Highlights Ⅳ.Of the Nine Rows of Structures Making up the Large scale Complex, Nan Hall is of the Greatest Prominence Ⅴ.The Mountain Resort Concentrates the Highlights of Famous Gardens, Retaining More Charm than Form Ⅵ.The Structures Built in the Mountain Areas were in Harmony with Their Natural Surroundings Ⅶ.The Opera Theatres and Grand Imperial Yurt Ⅷ.The Rise and Fall of the Mountain Resort A Chronology of Signiflcant Events