1. Dalian, also known as Bincheng, formerly known as Darini, Qingniwa and Daban (meaning the sea). Located at the southern tip of Liaodong Peninsula, on the coast of the Yellow Sea and Bohai Sea, it is backed by the northeast hinterland of China and across the sea from Shandong Peninsula. It is an important economic, trade, port, industrial and tourist city along the eastern coast of China. Dalian has a long history. As early as 6000 years ago, our ancestors developed Dalian, which was called Dalian in 1899. During the First Opium War and the Second Opium War, British troops invaded Dalian. As the main battlefield of the Sino-Japanese War and the Russo-Japanese War, Dalian suffered two major war robberies in modern history and became a colony of Russia and Japan for nearly half a century. Dalian has a superior environment and is known as "the window to the northeast", "the pearl of the north" and "the romantic city". It is the window of northeast China and the largest port city. It has successively won the honors of international garden city, China's best tourist city and national environmental protection model city. Dalian is the permanent host city of the World Economic Forum (WEF) summer Davos, with the largest agricultural futures exchange in China and the second largest soybean futures market in the world: Dalian Commodity Exchange. June 20 14, China's tenth national new district-Dalian Jinpu New District was formally established.

2. Qinhuangdao, referred to as Qin for short, is also known as a port city, a prefecture-level city in Hebei Province, a world-class automobile hub manufacturing base, the largest aluminum product production and processing base in China, the largest grain and oil processing base in the north, the first batch of coastal open cities in China, a coastal city in China, and an important foreign trade port in Northeast Asia. Located in the center of Bohai Economic Circle, it is the junction of Northeast China and North China. Qinhuangdao Port is the largest energy export port in the world and is known as the "barometer" of the national economy. Qinhuangdao is a national historical and cultural city, named after Qin Shihuang's quest for immortality. With a long history of more than 2,000 years, there are historical allusions, such as Qi Yi's surrender to the country, Qin Huang's quest for immortality and the flogging of Wei Wu. Qinhuangdao has co-hosted the Beijing Asian Games and the Beijing Olympic Games, and is the only prefecture-level city in China to co-host the Olympic Games and the Asian Games. ?

3. Tianjin, referred to as Tianjin for short, is a municipality directly under the Central Government of the People's Republic of China, a national central city, an economic center around the Bohai Sea, a national advanced manufacturing R&D base, a northern international shipping core area, a demonstration area for financial innovation and operation, a pioneering area for reform and opening up, an R&D center for traditional Chinese medicine in China, and a testing and evaluation center for marine instruments in the Asia-Pacific region. Tianjin is also one of the six mega cities. Tianjin was built in the second year of Yongle in the Ming Dynasty 1 1 month 2 1 day (1404 65438+February 23). It is the only city in ancient China with an exact record of the time when it was built. After more than 600 years, Tianjin has created a unique urban landscape that combines Chinese and Western cultures and is compatible with ancient and modern times. Tianjin is located at the intersection of five tributaries of Haihe River in North China Plain, bordering Bohai Sea in the east and Yanshan Mountain in the north. Haihe River winds through the city and is the mother river of Tianjin. Tianjin Binhai New Area is known as "the third economic growth pole of China". Tianjin is the permanent host city of the Summer Davos Forum. ?

4. Qingdao, a prefecture-level city in Shandong Province, a city with separate plans, and a sub-provincial city, is referred to as Qingdao, formerly known as Jiaoao, also known as Qingdao and Island City. Qingdao is an important coastal central city, an open coastal city, a new first-tier city, an economic central city, a national historical and cultural city, an international port city, a coastal holiday and tourist city, and a happy and livable city. It is known as "Oriental Switzerland". Qingdao is located in the southeast coast of Shandong Peninsula, east of Jiaodong Peninsula, near the Yellow Sea, across the sea from the Korean Peninsula, and at the forefront of the China-Japan-Korea Free Trade Area. It is adjacent to Yantai in the northeast, Weifang in the west and Rizhao in the southwest. Due to its superior geographical position, the Qing government established Qingdao in 189 1 year, and in 1897, Germany leased the port and railway. Qingdao is prosperous because of "one port, one road". With an international seaport and a regional hub airport, it is an important hub city for implementing the Maritime Silk Road and the national Belt and Road strategy.

5. Weihai, a prefecture-level city in Shandong Province, China, is located at the eastern end of Shandong Peninsula. It is bordered by the Yellow Sea in the north, east and south, Liaodong Peninsula in the north, Korea Peninsula across the sea in the east and Yantai City in Shandong Province in the west. The maximum horizontal distance from east to west is135km, and the maximum vertical distance from north to south is 8 1 km, with a total area of 5,797 square kilometers, including 777 square kilometers in the urban area. The coastline is 985.9 kilometers long. It governs Huancui District, Wendeng District, Rongcheng City and Rushan City. Weihai is also called ahava, which means lofty maritime boundary. Weihai is the closest city in Chinese mainland to Japan and South Korea, the birthplace of China's first navy in modern times and the site of the Sino-Japanese War. After the Sino-Japanese War, Weihai was occupied by foreign powers and returned to the motherland. ?