dear hani,
i think you should visit hangzhou in zhejiang province near shanghai,because hangzhou not only have many marvelous beauty spots,but also have many interesting and historical things: such as food,tea,silk.you can spend 3-5days in there.
Then,you can go to shaoxin, in zhejiang provice too. you can find the local characteristic boat,and drink local rice wine,sometimes you can visit the local drama. you can spend 1-2days.
Then,you can go to Yiwu China Commodity Market,there are so many cheap,but useful commodities in this market.you can spend 1-2days.