When packaging zongzi for express delivery, it is important to consider factors such as protection from damage, preserving freshness, and ensuring ease of handling. The packaging design should include a sturdy container that can be sealed properly, cushioning materials to prevent the zongzi from moving around during transit, clear labeling with the recipient's address and contact information, and a waterproof outer wrap to protect against moisture. Additionally, the design should be aesthetically pleasing to encourage customers to choose your service over competitors.