Three days are destined, seven points rely on hard work, but in the smog of the weather, the seven-point fight is still not enough, because even if you look at her (he) in the crowd, you still can't remember her ( He) looks. I have developed an air purifier that I can carry with me, but I can’t remember him or her, but it will allow you to take a deep breath in the misty weather, so that you can feel the infection in the misty weather. Breathing, the mood of this can only be said to be unspeakable.