He could only recoup one fifth of what he spent after bringing back a near complete corpse, this was the situation of most Basic mages, they could get more money from completing the mission objective than bringing a corpse back.
Besides cities like Bo used Space Bracelets to store important stuff like food reserves or important magic resources and barely anyone owned such items in Bo, probably not even Zhan Kong.
Besides there was another objective to the visit to the Hunter Union, wasn't he nearly unhirable thanks to lack of experience and his element, well wasn't killing a monster and bringing back it's corpse experience.
He could imagine the suprised looks on those experienced Hunters when he brought back a corpse haha.
He should be able to get an offer or two to Hunter squads, a stable salary and some actual Hunter points with this corpse as well, plus on top of selling the corpse he could claim the bounty placed by the government on monsters inside the city.
....
He parked the truck and walked up to the reception and drew gazes almost immediately, he was quite famous as the self endorsing Light mage.
" Good morning sir, how can we help you today" the receptionist who knew him said with a smile.
" I have a corpse of a one eyed Ape Rat that I killed within the city boundaries"
" Yes a corpse of Ape Rat from inside the city boundary... Huh the corpse of a what" shrieked the woman.
" A one eyed Ape Rat that I killed inside the city" replied Lin Feng blandly.
" Hey newbie, is this some new scam"
" Are you telling us, you a light mage killed a demon all on your own and came back unhurt"
Lin Feng simply ignored the regulars of the Hunter Union as he stared at the receptionist.
" We will have to confirm the corpse and that it was killed inside the city, please wait a moment".
The receptionist then went on to call her supervisor and the military outpost on snowy peaks Mountain, after which they confirmed that no one with his name or build left the city and most certainly no demon corpses were brought back to the city.
With his cultivation, this practically confirmed that it was killed within the city as Bo City lacked equipment to confirm it with a test.