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.
Lijiang, a prefecture-level city in Yunnan Province, is located in the northwest of Yunnan Province and at the junction of Yunnan, Sichuan and Tibet provinces. It is an important passage for international famous tourist cities, the ancient "Southern Silk Road" and the "Ancient Tea-Horse Road". The urban center is located in longitude 100 °25 & # 39, latitude 26 °86 & # 39, with a total area of 20600 square kilometers, connected with Diqing Tibetan Autonomous Prefecture in the north, Dali Bai Autonomous Prefecture in the south, Nujiang Lisu Autonomous Prefecture in the west, Liangshan Yi Autonomous Prefecture in Sichuan and Panzhihua City in the east, and 527km away from Kunming. Lijiang City is located at the connection between the Yunnan-Guizhou Plateau and the Qinghai-Tibet Plateau. The terrain is high in the northwest and low in the southeast. The highest point is the main peak of Yulong Snow Mountain, which is generally more than 2000 meters above sea level. It belongs to the low-latitude warm temperate plateau monsoon climate and is rich in water conservancy resources, animals and plants.