I didn't go to Beijing. Why does Beijing Cultural Tourism Bureau send short messages?

I didn't go to Beijing. Why does Beijing Cultural Tourism Bureau send text messages?

Maybe someone else registered some software with your mobile phone number, and maybe your mobile phone number was leaked.

When you enter the boundary of Beijing, people who come back from other places will receive a message on their mobile phones: "Beijing Municipal Bureau of Culture and Tourism: Welcome to Beijing! Please abide by the prevention and control measures of the Beijing Municipal Government, wear a mask, wash your hands frequently, gather less, travel less, cover your nose and mouth when coughing, protect yourself and report your personal situation truthfully. " This is a working measure taken by the Beijing Municipal Bureau of Culture and Tourism to deal with a large number of passengers entering and leaving Beijing.