Can I send it by express in red team?

You can't. During the epidemic period, people who receive the green code will pass by the code, and the yellow code and the red code should be isolated by themselves. Before the red code turns into the green code and the prevention and control restrictions are lifted, the express delivery cannot be sent. The "health code" is based on real data and can be generated by citizens or people who return to work after self-declaration and background check.