Interesting that it's not Shenzhen, as CFG's China strategy looked (to my uninformed eye) to be focusing there and there isn't a team. Anyway, I'm sure they know what they're doing and have tapped the knowledge of the Chinese partner as to how and where to invest to maximum effect.
There is a team, Shenzhen FC, long established and former Champions, though now in League 1.
Nanjing sounds a good shout. Pop: 8.5m