Jinan needs to scan the code to go to public toilets and check the nucleic acid. The question is, has the main infection route been discovered in the large database of patient epidemic investigation trajectory?
If so, it should be done by the whole country. If not, it is better to correct the deviation as soon as possible.

After all, people have three urgent needs. Although the new crown is dangerous, if you don’t have nucleic acid and cannot go to the toilet, holding up the three urgent needs is also unfavorable to your body; it is even more indecent to see everywhere.
Here, inspired by scanning the code for public toilets in Jinan, I have the following ideas:

Although I often pay attention to the trajectory of the cases in my city, when publishing the trajectory, I will pay special attention to avoiding those areas, but each person is different every time and there is no special rule. Over time, I don’t want to pay attention.
Now all cases are reported through the system. Can big data be used to arrange high-risk and easily infected places for everyone to order.
In this way, everyone can understand and strengthen protection in high-risk areas.
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