Upgrading to Another World: Starting with the Tribal Patron Saint

[Old harem-themed game from another world] After working all day long and losing money for a year, Li Xing resigned in embarrassment and returned to his hometown to farm. When cleaning the warehouse, he accidentally discovered the door to a different world. Although there were fantasy races such as elves orcs on the opposite side, the civilization was still stuck in the Stone Age. The outsider is the master. Li Xing's gate can not only travel back and forth, but also comes with a plug-in system for unlimited resurrection. What kind of low-level cattle and horses are these? I, Li Xing, will not eat beef from today on!