The young boy is strong indeed. passing all test without any form of harm on him.
From the description given about the blacksmith I guess he's a very principled man that wants only the best to work for him.
Sometimes it's just good to be bold and take necessary steps towards achieving your goals, or pursuing what you desire just like the boy did. Peradventure or God willing, one might succeed.
I think the boy is even smarter than the blacksmith can imagine. Maybe in the process of monitoring the blacksmith for 3days, he might discover other things about him.
I hope it'll be a good thing for him and his mother.
good story ❤️