Also known as Waimingtang, or Waiyangdamingtang, it refers to the place where the cave field meets the water outside the mountain. Miao Xiyong's "Buried Sutra Wing": "The third is that the general trend of foreigners has been gathering outside the Dalong Lake since their young ancestors, or merging into the outer hall since their young ancestors, or neither. The foreign water flows in front of the Zhongmingtang, and the latter part of the water flows into the horizontal water, or the distant rivers and streams come to embrace the horizontal water, and the foreign Daming Hall becomes famous that day." Damingtang is located at the intersection of the four waters, so it is appropriate to gather and disperse. When the water is collected, the prosperity of Sri Lanka is exhausted. The so-called Zhong Ling Yuxiu is a good place. There should also be a closed barrier with a water mouth, and the city is dense. Otherwise, although the gas comes and does not gather, it is straight and not collected, such as passing clouds and heavy knots. Liao Jun's "Venting God's Will, Wanting to Enter the Hall": "The entrance of the lobby should be closed, I am really angry." Xu Shanji's "Exegetics on the Son of Man: Water Law": "The outer hall must be paved on both sides, surrounded by mountains, and there is no vacancy. Seeing the twists and turns of the outside water is good for Waimingtang. " It's not as wide as Daming Hall. The hall is spacious, the weather is magnificent and the atmosphere is deep. The more obvious the status of people living in houses, the more important it is to control the palace. His children must also be distinguished, open-minded and king-like. If the outer hall is small, the situation will be like sitting in a well and watching the sky, showing the spirit of family. Their children will be stupid, heartless, greedy and ugly, and have no honor at all. Just because it is wide, it can't be as open as the wilderness. Otherwise the anger of prosperity will disappear without a trace. Although the land is beautiful, there is no hole.