For example, in the Minhang campus of Shanghai Jiao Tong University Cainiao station, there is a special classification and recycling area, not only express packaging delivery desk, classification delivery port, but also tables and chairs for teachers and students in the station unpacking, classification delivery. The delivery table and the delivery port have implemented the separation, classification and recycling of paper and plastic, so that the express carton and plastic stuffing can be recycled, and provided to the people who come to the station to send mail for free reuse; In Shanghai University of Finance and Economics Cainiao Station, more than 3,000 packages are collected and sent here every day, producing a large number of cartons, in order to promote the recycling of cartons and green mail, the station has set up 3 green recycling boxes, convenient for students to unpack and donate cartons. Data show that through these green recycling boxes in colleges and universities, five figures of express cartons can be recycled every day.