Introduction to Mingshan Hall: Mingshan Hall is located in Shangwan Village, Yangwan, Dongshan. It is a medium-sized residential building with high architectural art and Ming Dynasty style. The three treasures of Mingshan Hall are "brick-carved gate tower, hall couplet, and stone-carved wall door". The exquisiteness of their carvings is very rare among the Ming Dynasty architecture in the Jiangnan area. In particular, the bluestone carved wall door was called a fine art among stone carvings by Liu Haisu, a famous Chinese art master, and considered a rare treasure.