San Diego (/ˌsæn diˈeɪɡoʊ/ SAN dee-AY-goh, Spanish: [san ˈdjeɣo]; Spanish for 'Saint Didacus') is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States and the seat of San Diego County, the fifth most populous county in the United States, with 3,338,330 estimated residents as of 2019. The city is known for its mild year-round climate, natural deep-water harbor, extensive beaches and parks, long association with the United States Navy, and recent emergence as a healthcare and biotechnology development center. San Diego is the second largest city in the state of California, after Los Angeles.
Lianshan Zhuang Yao Autonomous County, which belongs to Qingyuan City, Guangdong Province, is located in the Mengzhu Mountains, one of the Wuling Mountains in Nanling, and in the joint of Guangdong, Hunan and Guangxi provinces (regions). Babu District, Hezhou City, Guangxi Zhuang Autonomous region in the west, and Jianghua Yao Autonomous County in Hunan Province in the north, with numerous peaks, vertical and horizontal streams, and steep terrain. 87% of the total area of the county is mountainous. In ancient times, it is known as "nine mountains, half water and half land." after years of afforestation, the forest coverage rate reached 86.2% in 2014, ranking first in Guangdong. It is rich in native products such as Shatian pomelo, big meat ginger, rosin, Huaishan, winter mushrooms, tea oil, honey, fragrant japonica, bamboo shoots and so on, among which big meat ginger is known as "the hometown of Guangdong ginger". The autonomous county has jurisdiction over seven towns of Yoshida, Taibao, Wedong, Yonghe, Futang, Xiao Sanjiang, Shangshuai and three agriculture and forestry.