What is the most similar city between China and Shanghai? Why?

Wuhan and Shanghai were one of the two largest cities in China in the Republic of China and the early days of the People's Republic of China. Among them, Wuhan once ranked every place in the list of Asian cities and was known as Chicago in the East. In China, two cities were once labeled as "big" cities. One is Shanghai and the other is Wuhan. When I say "big" here, I don't mean that Wuhan is now the largest city in China, but that it used to be, and for a long time, its influence was particularly great, no less than that of Shanghai and Beijing today. ) What we hear most is Big Shanghai and Big Wuhan. What else is there? Great Beijing, Great Tianjin and so on. They are all nouns that have appeared since the reform and opening up!