Why does the Hebei health code related to Guangdong become a yellow code?

I have been in contact with infected people in Guangdong and have been to high-risk areas in Guangdong.

1, contact with infected people in Guangdong: Hebei travel code is updated nationwide in real time. If you have contact with infected people in Guangdong, the travel code will turn yellow.

2. I have been to the high-risk area in Guangdong: Hebei trip code will also turn yellow when it passes through the high-risk area in Guangdong.