This weekend me and my wife will come to Shanghai and stay there for 10 weeks to take Mandarin courses. Our courses will be weekdays, so all the weekends we will have plenty of free time. Since I have seen Shanghai before, this time we want to spend our free time to see somewhere around Shanghai. We like Chinese culture, nature, lakes, water cities, mountains.. I need your suggestions... Tours can be for 2 days, 3 days, or 4 days.. We can arrange our course time accordingly..