1. Differences in working environment: The cleaning working environment of university canteens is more comfortable than that of supermarket packers. In supermarkets, packers need to face the messy and noisy environment of shelves, while the environment of university canteens is cleaner and quieter.

2. Work pressure difference: The cleaning pressure of university canteens is relatively small, and packers need to face fast-paced delivery and busy working hours, while the cleaning pace of university canteens is more stable and relaxed.