Where does the Beijing-Tianjin-Tanggu area refer to?

Write the Beijing-Tianjin-Tangshan area correctly. Mainly around the Bohai Sea, including Liaoning, Hebei, Beijing, Tianjin and Shandong, it is another region with rapid economic development after the Pearl River Delta and the Yangtze River Delta, with Beijing, Tianjin and Tangshan as the core cities. Bohai Economic Zone has the following advantages. The location is excellent. Located in the northern part of the eastern coastal zone, bordering the maritime gateway of the northern region, Tianjin Port and Dalian Port, which have the eastern end of the Eurasian Continental Bridge, are the economic core areas of North China and Northeast China, with a vast hinterland that almost covers half of China.

The Beijing-Tianjin-Tangshan metropolitan economic circle has the highest level of science, technology and culture in China, and is a national first-class high-quality talent training base and open education center. The advantages of science and education have become the new growth point of economic development and the main power source of social progress in this economic circle. According to the statistics in 2000, the number of secondary education in this region reached13.624 million, and the number of higher education (Beijing and Tianjin) reached 3187,000. About 280,000 people have scientific and technological activities, accounting for 8.8% of the country, and the number of invention patents granted accounts for about one-fifth of the country.