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.
Dingri County, which belongs to Xigaze City, Tibet Autonomous region, is located between longitude 86 °20 "7 °70" east and latitude 27 °80 "29 °10 'north. Located at the foot of Mount Everest at the northern foot of the Himalayas, it is the center of Mount Qomolangma Nature Reserve (Zhaxi Zong Township and Qudang Township), adjacent to Dingjie and Sakya Counties to the east, Nyalam County to the west and Anren County to the north; Lazi County to the northeast; and Nepal to the south. Dingri County resident Xieger 4300 meters above sea level. The average elevation of Dingri County is 5000 meters. The total land area of Dingri County is about 14000 square kilometers. It is 115 kilometers from east to west and 152 kilometers from north to south. In 2013, there were 62000 people in Dingri County, including Han, Tibetan, Uygur and other ethnic minorities. There are famous Gama ditches and Rongzhong ditches. The fixed date belongs to