Gulin to Luzhou need to do nucleic acid, now no matter where to go need to show proof of nucleic acid, if there is no proof of nucleic acid can not go, if the nucleic acid more than 72 hours will change the yellow code, changed the yellow code really can not go anywhere, now the big data is very powerful as long as you go to a place where there is no nucleic acid or no record of nucleic acid will be changed to a yellow code, so if you go out to the time to do a good job ahead of the nucleic acid