What details should I pay attention to when traveling to Shanghai?

Look at the time and pay attention to the solar terms. I have lived in Shanghai University for four years, but it is more like a residential area. It's very cold in winter in Shanghai, so you should wear thick clothes. It's very hot in summer, so do a good job of sun protection. Shanghai is near the sea, with strong sea breeze and frequent rainstorms. There are many foreigners in Shanghai, and Mandarin is relatively common, but I think the dialects in Taiwan Province Province and Fujian Province are also very pleasant to listen to. Old people may speak more orthodox Shanghai dialect, but they may not understand it, which generally has little influence. Cash is no problem, Alipay is more convenient.