I'm on the fence. Sometimes I think it would be awesome and sometimes not so much. What did you enjoy?
To be fair, I've only spent time in Shenzhen and Shanghai. I've spent much more time in Taipei, but obviously that's not China.
So Shenzhen and Shanghai are obviously very modern cities. Shanghai in particular is basically glittering because it's brand freakin' new.
But in general it gave all the advantages of a large city but had its own unique feel compared to where I've traveled in North America or Europe. Business-wise, it seemed to have a more free-wheeling "let's get sh!t done" aspect than anything else. I feel like the Chinese do business much like Americans do business, where the Japanese do business much more like Europeans do business. It's all about results and less about tradition.
I personally love the food. American Chinese food doesn't hold a candle to the real thing. Here everything is over-sauced and too sweet. Over there you get all sorts of complexity that I think is dumbed down at your typical American Chinese restaurant. There are certainly things that are "unconventional" to western palates, but I never went into the heart of China for the really outlandish stuff.
That said, while I enjoyed my time in China, I really find myself enjoying Taipei even more. It's a really unique place--a mix of indigenous population, Chinese expats who fled the revolution, Japanese influence from their conquest in WWII. Then as it grew as an economic power outside of communist China, it attracted a bunch of other folks from the region. It's a smorgasbord of cultures and cuisines and people. I'd love to go back there...