No.51Huaguang Lane, Guo Shan Street, Nanchong City. Nanchong Workers' Cultural Palace has an antique calligraphy and painting market. Opposite Guo Shan Park. If you go in, you can safely look at the antique shop on the left hand side of the door. All belong to Nanchong Collection Association. I have seen everything in their shop, which is basically old, and there are few imitations.