Joke Collection Website - Blessing messages - Is the short message from Harbin epidemic prevention and control headquarters sent in groups?

Is the short message from Harbin epidemic prevention and control headquarters sent in groups?

No, according to relevant public information, the epidemic prevention short message is not a mass message. For individuals who travel with mobile phones, the travel trajectory is tracked according to the mobile phone signal. Harbin's epidemic prevention and control policy is that anyone who lives in a high-risk area for less than 7 days will implement "hand in hand" closed-loop management after arriving in Harbin, and carry out 1 door-to-door nucleic acid testing every day.