What are the first-tier cities in the southeast with Tangshan in Hebei as the center? Can you be more specific? Thanks in advance.

First-tier cities have north, Guangzhou and Shenzhen. The first-tier cities in southeast China you mentioned are Shanghai, Guangzhou and Shenzhen.

Beijing

Beijing is the capital of People's Republic of China (PRC), the municipality directly under the Central Government of China and the national central city, the political, cultural, educational and international exchange center of China, and the decision-making and management center of China's economy and finance. Beijing is located at the northern end of North China Plain, bordering Tianjin in the southeast and surrounded by Hebei Province. Beijing has a history of more than 3000 years and 850 years. It is one of the "four ancient capitals of China" and has certain international influence. It was first named "thistle" in the literature. Beijing has gathered Chinese culture since the Yuan, Ming and Qing Dynasties, with many places of interest and rich cultural landscape. It is the city with the most world cultural heritage in the world. Beijing is also one of the wettest areas in North China. Peking University and Tsinghua University, historic institutions of higher learning, are also located here. [ 1]

Shanghai

Shanghai, also known as "Shanghai Beach", is one of the four municipalities directly under the Central Government of China, a national central city of China, an international economic center, an international financial center, an international trade center and an international shipping center. Located at the mouth of the Yangtze River in the middle of Chinese mainland coastline, Shanghai is the largest foreign trade port and the largest industrial base in China. It faces Kyushu Island in Japan across the sea, with Hangzhou Bay in the south and Jiangsu and Zhejiang provinces in the west. The cargo throughput and container throughput of Shanghai Port rank first in the world. Shanghai is a new tourist city, with profound modern urban culture and many historical sites, and has hosted the World Expo. The cultural integration of Jiangnan tradition and immigrants has gradually formed a unique Shanghai culture. Shanghai has become an international metropolis and is committed to building itself into an international financial and shipping center by 2020.

Guangzhou

Guangzhou, the third largest city in China, the southern gate of China, the national central city, the three comprehensive national gateway cities and international metropolises positioned by the State Council, the world-famous port city, the financial, trade, economic, shipping, logistics, political, military, cultural, science and education center and national transportation hub in southern China, has direct socio-economic and cultural radiation to Southeast Asia. With a history of more than 2,000 years, Guangzhou is a famous historical and cultural city in China, the largest and oldest foreign trade port in China, and one of the starting points of the Maritime Silk Road. It is called "the capital of the Millennium". As the window of China's foreign trade and the national gateway city, Guangzhou is known as the "Third World Capital" with many foreigners. It is also the city with the largest number of overseas Chinese in China, and it is also called "going north" with Beijing and Shanghai.

Shenzhen

Shenzhen, also known as Pengcheng, is an international metropolis, located on the east bank of the Pearl River Delta, separated from Hong Kong by water. It is the earliest city opened to the outside world in China, the first special economic zone in China, a sub-provincial city and a city with separate plans. Approved by the State Council, it was formally established on August 26th. 1980. Land area 1953 km2. August 20 10, Shenzhen Special Economic Zone expanded to the whole city. Shenzhen has developed from a border fishing village into an international city with a certain international influence, creating a "Shenzhen speed" that attracts worldwide attention. Shenzhen has become China's financial center, information center, high-tech industrial base, commercial center and tourist attraction in South China. Shenzhen is an important land, sea and air transportation hub city in China. Because of its proximity to Hong Kong, the city boundary has the largest number of entry and exit ports in China. It plays an important role in China's economy.