The first city is divided into GDP, population, area and resources. Tokyo ranks first, Shanghai ranks second in Asia and Tokyo is also the second largest city in the world.
++There are only two cities in the world, new york (the largest city in the United States) and London (the largest city in Europe)
+China's Beijing and Shanghai were selected. Tokyo, Sydney, Paris and Washington are all first-tier cities in the world.
China's Hongkong, Guangzhou and Shenzhen are only the first in the world.