Also known as the "Wall Bureau", it means that when Long Mai falls into the Pacific Ocean from the peak, the rest of the branches will be wrapped around the wall to enclose the real dragon and prevent the bustling vitality from leaking out. "Los Angeles" and "Ju Yuan" are both figurative words. Because of its dense entanglement, it is like a net, hence the name of Los Angeles. Its shape is like a star in a constellation, too small and purple, and the sky is surrounded by three walls to protect the throne, so it is also called the wall bureau. "Shake the Dragon Sutra" said: "(Long Mai) or fell from the peak to the Pacific Ocean, and stripped off several sections ... This dragon mostly fell from the waist, turned the remaining branches over to make a city wall, and the city wall bent over to guard the door, and Luo Xing acted as a waist guard outside the door ... Luocheng was like a city wall, and the dragon gathered in the city. Luo Xing is wrong between the city walls, so it is sometimes called Shuikou Mountain. " Long Mai fell into the flat sea, and there was no trace of him. As long as you find mountains and water around you, you wrap yourself like a city wall, where dragons stop gathering. The so-called "When you go to Mo Wen, you only see it as a real dragon", which is Los Angeles. Feng shui experts believe that where there is a knot, there is Luochengguan. Long Mai's breath will surely lead to a big and expensive place. Bu Weize's "Ode to Snow Heart": "The tower drums and horns are listed in Luocheng." Note: "If the cluster is high and round, the tower is also on Mount Tai. The clusters are sharp and beautiful, and the mountains are also ancient. If you are listed in Yucheng, you will inherit the earth. " It is only worth noting that it is best to be wide and close, not too narrow. If so, it is expensive but not thick, and it won't last long. Moreover, the landscape it surrounds must bow to the Ming Tang around the imperial court, and there must be no rebellion or leakage in any form, otherwise it will be an empty and cheap place.