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.
Qujing is a prefecture-level city under the jurisdiction of Yunnan Province, located in the east of Yunnan Province, at the source of the Pearl River, at the junction of Yunnan, Guizhou and Guangxi provinces and regions, known as "the key of Yunnan and Guizhou" and "Yunnan throat". It is 120km away from the provincial capital Kunming and covers an area of 28900 square kilometers, accounting for 13.63% of the area of Yunnan Province. As of April 2018, Qujing City has jurisdiction over 1 city, 3 districts and 5 counties. At the end of 2016, the total registered population of the city was 6.5297 million. Qujing is located in the Wumeng Mountains of the transitional zone from the eastern Yunnan plateau to the western Guizhou plateau in the middle of the Yunnan-Guizhou plateau. The west is embedded with the lake basin area of the central Yunnan plateau, the eastern part is gradually inclined to the Guizhou Plateau, and the central part is a watershed zone between the Yangtze River and the Pearl River. The terrain is high in the northwest and low in the southeast. There are eight unique languages of Yi, Buyi, Zhuang, Miao and Yao.