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Beijing, Shanghai, Shenzhen and Hangzhou are the unicorns' main breeding grounds, though 12 other cities have small populations. Beijing is home to almost half of the total.

Beijing ranked first in "unicorn" numbers among Chinese cities in 2018, with 74 such enterprises, followed by Shanghai, 34, Hangzhou, 16 and Shenzhen, 14, according to a report compiled by the Evergrande Research Institute.

Before the symposium, Hu visited foreign trade firms and the Qingdao part of China (Shandong) Pilot Free Trade Zone to learn about production and operations of companies.

Beijing has the most complete Beidou industrial chain layout in the country, with about 116 major enterprises, and an industrial scale of over 50 billion yuan (about .2 billion) in 2019, said Chen Huanwen, deputy director with the Beijing Municipal Bureau of Economy and Information Technology.

Before the division of the Korean Peninsula in 1948, there were two railway lines linking the northern and southern parts of the peninsula - one in the west and the other in the east.