Shanghai Yangshengtang should be a replica of Hainan Yangshengtang. There must be a difference between these two prices and the purchase price. For better effect, I'd better choose Hainan. I'm using VC and ve from Hainan Yangshengtang now. I've used VE from Shanghai Yangshengtang before, and the appearance is different from Hainan's. Hainan's VE is crystal clear, and Shanghai's is no different from ordinary ones.