Introduction to Dong Zhong Lai: Dong Zhong Lai is the residence of Mou Zongyi, the fourth grandson of Mou Mo Lin, with a total of six courtyards and five courtyards. Its construction materials are exquisite and its workmanship is fine. The chiseled wall stones are all water-milled and the joints are slightly uneven, so copper coins, pots and irons are used as cushions. Part of the roof is made of square bricks, and charcoal is laid on top to absorb water and moisture, and to keep the house warm in winter and cool in summer. The green bricks and gray tiles are soaked in soybean juice to prevent weathering and maintain the original color.