the four unique features: picturesque rocks, legendary pines, the sea of clouds and hotsprings “四绝”：巧石、奇松、云海、温泉
The Forbidden City 紫禁城
Gate of Supreme Harmony 太和门
Hall of Supreme Harmony 太和殿
Hall of Central Harmony 中和殿
Hall of Preserved Harmony 保和殿
Hall of Literary Harmony 文华殿
Hall of Martial Valour 武英殿
Pavilion of Literary Source 文渊阁
Complete Library of the Four Treasures of Knowledge 四库全书