His Dad's Animal Field.

Ethan rode the horse straight into the village square as they were riding past different people. As the horse was in motion, Aiden was imagining what the experience would be like learning how to ride a horse.

..He knew it wouldn't be easy, that's for sure.

Apart from that, he was imagining what the experience would be like exploring his dad's animal field...as Ethan said, the animal field that generates him lots of income.

As known, Ethan receives income from two places. He gets paid for being an average-ranked chief, and he also earns from his animal field which generates more income for him.

Ethan rode the horse until they arrived at the area where his animal field was situated. When they reached the place, Aiden recognized it, though it's been years since he last came here...he still recognized it.

Apart from Ethan, other officials own animal fields as well...ones larger than Ethan's own and generating more income.