The top 50 most liquid stocks on the ShangHai while the ShangHai Composite contains 881 stocks trading on their floor.
The safest and secure bet are the more reputable and well known of their stocks. This is understandable as a foreign investor I would be a fish out of water trying to trade against their MMs not even knowing all their rules. At least the big caps are more widely recognized and the scamming would have to be kept to a bare minimum.