How to treat the situation of health codes flying all over the sky?

Health codes are flying all over the sky, which is quite common, because having a health version is equivalent to having a passport, and entering every city requires such protection. Well, it's equivalent to your temporary id card, and it's much better than your ID card. Being healthy is equivalent to the proof that your temporary passage is allowed, which is full of auspicious meanings. I hope everyone can stay healthy and not get sick in this protest.