I've been there. It's a typically chinese place. Mass production wherein kids learn the foundation techniques and implement them with ample skill cheaply. --and then... sometimes among the multitudes something curious and new.

It's nothing different from the range of talent found anywhere else in the world, such as at an American summer art market. Most work is average and boring, but some personalities just can't help but be more inventive and compelling. In Shenzen it's just on a really huge scale.