Excuse me, what does this mean? What does it mean to come to Shanghai from abroad?

Coming to Shanghai from abroad means entering Shanghai from stations, ports and docks. As long as you arrive at1October 30th 10 today and don't return from abroad (including Nanjing), you don't need to pay attention to this kind of news. This short message should be sent by the telecommunications department in cooperation with relevant government departments, targeting all mobile phone operators with the operator number entering the area. I don't meet the above conditions, so relax and do what I should do in Shanghai.