Generally not. The color of the health code is generally analyzed by the passage of big data, if the individual has been active and stayed in the area near the key places where confirmed cases and asymptomatic infected people have stayed, and there is a possibility of contact with confirmed cases and asymptomatic infected people, then his/her health code will turn yellow. But if you just drive through or pass by the sealed area, as long as you don't stay, then your health code won't change color, so you don't need to worry too much.