(1) Los Angeles, a big city outside the city. Northern History, Female Biography, Wei Rencheng and Guo Fei: "The thief handsome Jiang Qingzhen defected from the party and attacked Luocheng." "Zi Tongzhi Tang Jian, Zong Yi and Xian Tong for nine years": "When they were not moving, Luo Cheng and Yan Zeng fell to Zicheng." Hu Sansheng's note: "Luocheng is a big city outside; Zicheng, a small town in the city. "
(2) Luocheng in geomantic omen, also known as the bureau of the wall, means that when Long Mai falls from the peak to Pingyang, the rest of the branches will be wrapped around the wall to enclose the real dragon, so as not to let the gas of wealth leak 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.