During the Tang and Five Dynasties, Sichuan’s most prestigious push, Ya'an Mengding Tea, “Yangtze River Water, Mengshan Mountain Tea” has long been a household name, and the Tang Dynasty Bai Juyi praised “Qin Li Zhi Wen Wei Green Water, Tea is old and Mongolian "Mountain" Mengshan tea is of high quality and low price, unique in taste and famous throughout the country.