Introduction to the Tang stele: The stele gallery on the east side of the gate is the Tang stele. Among them, the "Tang Dynasty Prime Minister Zhuge Wuhou Ancestral Hall Stele" was erected in the fourth year of Yuanhe (809 AD) of Emperor Xianzong of the Tang Dynasty. It is famous for its articles, calligraphy, and engravings. Known as the "Three Unique Monuments", it has high cultural relic value and is a national first-class cultural relic.