Visit Gaoqiao wholesale market, 高桥休闲食品批发市场 in Changsha (Hunan). The task involves visiting a store within the market to verify that some products are sold. You will be required to take pictures and report your findings.
I have my chinese friends in Changa. We have been working together in Hunan Construction company. They can go and make any survey you need. Just let me get in touch with them.