I have been to all three places. Let me give you some advice! Starting from Nanning, because the plane is similar to a soft sleeper, I personally feel that the plane is better. First of all, go to Hangzhou, which is a very leisure city. If you just play in Hangzhou, it will take two to three days. It is also good to visit the West Lake, Xixi Wetland Park, Wulin Square and Heye Street, find green tea and eat hangzhou dishes at grandma's house. I don't think I have time to go to Xitang and Qiandao Lake. Then take the high-speed train to Shanghai. Shanghai can be visited for a long time, or it can be visited soon. It is recommended to go to Tianzifang, Nanjing West Road Pedestrian Street, Huaihai Road, Bund and Pudong cbd. If you like trendy things, don't miss Julu Road and Changle Road. You can also visit the buildings left by the World Expo and some ancient towns such as Qibao and Zhujiajiao. Depending on your schedule, it will take about three to four days, and then take the high-speed train to Nanjing (the high-speed train is really convenient). I don't go to Nanjing much. Let me give you a little recommendation. Two or three days is almost enough for Sun Yat-sen's Mausoleum, Xuanwu Lake and Confucius Temple, and the return plane or sleeper is ok. If you stay, I think Hanting is a good hotel (the conditions of Hanting in Shanghai are certainly comparable to those of Samsung hotels in other cities), but you must make a reservation in advance. There are not a few people going out to play during the winter vacation. These three cities are very popular, so get ready in advance! ! I hope I can help you! Am I calling alone? Hope to adopt!