Why did I go to Shenzhen to work after the date of Shanghai? Will they send text messages to know that I am in Shenzhen?

If you use China to move, it has a geographical location tracking, similar to the real-time monitoring of GPS. Because if you move, there will be a cross-provincial regional conversion, that is, you have to add the area code to the previous fixed telephone, that is what it means. In the past, when traveling across provinces, it would send you a text message to welcome you to every province or city, and it could monitor your arrival at this place. . One of the reasons why you received the relevant short message from Shenzhen Meteorological Bureau is that it detected that your phone is from other places (Shanghai) and treated you as a tourist. The other is where you receive the weather forecast. Unless you have customized the weather forecast for a certain area.