Huaqing Palace is the parting courtyard of the emperors in the Tang Dynasty, which has been favored by emperors of all dynasties because of its 6000-year-old hot springs. They spend winter and summer here and hunt on Mount Li. Tang Xuanzong and Yang Guifei spent eight spring and autumn periods here. Bai Juyi's Song of Eternal Sorrow said: "It was early spring. They bathed her in a pure flower pond to warm and smooth her creamy crystal skin ",describing the scene of the imperial concubine taking a bath;" Huaqing Palace reached its peak in Xuanzong period of Tang Dynasty, leaving a legacy treasure for later generations: Huaqing Palace has the Royal Yutang Ruins Museum and Liyuan Ruins in Tang Dynasty; By the Qing Dynasty, Empress Dowager Cixi had been stationed here; More legendary, the first shot of 1936 "Xi' an incident" was fired here, and now the complete old site is preserved.