Ninjas were humans too, and they needed to eat, drink, relieve themselves, and sleep. The five ninjas entering the mountain actually carried quite a lot of various equipment, food, and even money with them, each one shouldering a sizable bundle that served both as storage and a makeshift 'shield'.
Park Jeong-ui collected all the items from the ninjas, picked out what he could use, tied them into a small bundle, and carried it on his back. These supplies would be enough for him to make his way out of the Qinling Mountains and return to Korea through his own channels.
"Mr. Su, I take my leave now. Please take care!" Before leaving, Park Jeong-ui bowed deeply to Suming once more.