If you go by yourself, it's more than 200 hard seats to Hangzhou by train. Hangzhou can visit the West Lake for free. There are many scenic spots around Hangzhou. I don't know what scenic spots there are in Wenzhou. Shanghai has the Oriental Pearl and the Yuyuan Garden. It is also more than 200 for Shanghai to return to Nanning.
It is said that there are special fares between Nanning and Shanghai. As long as you are in 290 yuan, you can consult.