Sure, Shangai is a real load center, problem is that they have access to 2c/kWh coal-fired power, so there's not going to be a case for offshore wind until that changes. I would not trust a government that says "I'll pay you 12c/kWh for 15 years if you do offshore wind" in such circumstances, especially not China's.

Even Russia is not able to sell gas to China given how cheap coal has been.

Wind power