How much can a novice deliveryman run a day in Fuzhou Park?

A friend of mine works part-time in Pupu, 4 hours a day, and can choose to work overtime for 2 hours, which means that he can only deliver 6 hours a day at most. On the first day of work, I only delivered seven orders in four hours. I can only comfort myself with unfamiliar roads because of my low efficiency. With the passage of time, the authority to allocate orders has changed from one to almost three, and it is still increasing slowly. What he fears most is that there are orders on the high-rise stairs.