Introduction to the Tang Yutang Site: The Tang Yutang Site was discovered in April 1982. After more than three years of excavation, the "Lotus Soup" and "Begonia Soup" where Emperor Xuanzong of the Tang Dynasty and Yang Guifei bathed, and the "Begonia Soup" where Emperor Taizong of the Tang Dynasty bathed were found. There are five royal soup pool sites including "Xingchen Tang", "Prince Tang" and "Shangshi Tang".