Zhongshan District is the birthplace of the city of Dalian and the center of Dalian. Zhongshan District is located in the eastern part of Dalian city, longitude 121.63 °, latitude 38.92 °, east, south and north of the Yellow Sea, the west and Xigang District border. Historical records began in the Eastern Han Dynasty, when it was called "Sanshan", in the beginning of the Tang Dynasty, it was called "Sanshanpu", and in the Ming and Qing Dynasties, it was called "Qingniwa". 1945 after the liberation of Dalian, the city's 12 districts of After the liberation of Dalian in 1945, the city's 12 districts of Central, Heizuizi, Nanshan, Terigou and Houtan 5 districts belong to today's Zhongshan District, in honor of Dr. Sun Yat-sen, the municipal government Heizuizi District into Zhongshan District to 1959, these districts have been incorporated into the Zhongshan District, the formation of today's jurisdiction.
Xigang District is the main urban area of Dalian, with an area of 26.6 square kilometers, under the jurisdiction of 5 streets and 47 communities. Xigang District is rich in tourism and human resources, Dalian Forest Zoo, Fu Jia Zhuang Park, People's Square is a famous tourist attraction. Xigang District has a number of famous enterprises such as Dalian Shipbuilding Heavy Industry, Wanda Group, Hongguang Luck Loyalty, etc. Many Fortune 500 companies, such as Wal-Mart of the United States, Carrefour of France, Metro of Germany, Ikea of Sweden, Decathlon of France, etc., have invested and developed their business in Xigang. The First Hospital of Dalian Medical University, Dalian Library, Dalian Science and Technology Museum, Dalian Experimental Kindergarten, Dalian Experimental Elementary School, Dalian Youth Palace, Dalian Song and Dance Troupe and other city's best public ****service facilities are all located in Xigang. Xigang District has been awarded "National Harmonious Community Construction Demonstration District", "National Advanced District in Cultural Work", "National Advanced District in Science and Technology Progress", "Liaoning Provincial Civilized District Pioneer", "Dalian Experimental Kindergarten", "Dalian Experimental Primary School", "Dalian Youth Palace", and so on. Liaoning Provincial Civilized District Pacesetter", "Liaoning Province Basic Education Strong District" and other honorary titles.
Shahekou District is located in the middle of Dalian city, south of the Yellow Sea, and Xigang District, High-tech Park, Ganjingzi District, with an area of 48.32 square kilometers, it is a modern urban area suitable for living, learning, and traveling. Shahekou District is now under the jurisdiction of Lijia Street, Chunliu Street, Maban Street, Xi'an Road Street, Nansha Street, Xinghai Bay Street, Heishijiao Street, 7 streets, 90 community residents committees, with a resident population of nearly one million, is the most populous center of Dalian city