Will the health code turn red when returning to Shanghai from Ningbo?

Depending on the situation, if you take your mobile phone to the danger zone, it will change. Health code is a personal two-dimensional code based on actual real data, which is generated by citizens or people who have returned to work on their own online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly. Health code color change rules: residents in fixed risk areas, residents in high risk areas are red, residents in medium risk areas are yellow, and residents in low risk areas are green. Low-risk residents go to high and medium-risk areas, and those with green codes enter high and medium-risk areas. When the phone is turned on 1 hour, the health code will automatically turn red and yellow.