"How is the night, the night is not central"! The main hall of the West Han Palace is repaired on the native hill of Longshou Mountain, and is raised step by step, 20 meters above the ground, which is magnificent. Since Liu Bang cut the ribbon, it has become a place of governance in many dynasties, until the Sui and Tang Dynasty was still classified as part of the forbidden garden, which existed in 1041, and is the most used and longest-existing palace in Chinese history.