Go to the Hidden City of Rulme and walk towards the general store. Talk to the merchant Uribor and ask him for some news. Ask him if there is any job for a group of adventurers. He will tell you if you can take a hammer to the weaponsmith in Tur. Choose the first option and go to the Village of Tur which is located near the kingdom of Sumur. Once there, locate the weaponsmith and give him the hammer. You'll receive the easiest 200 crown reward you'll ever get in the game. You can do this again and again.
For those who haven't located the Hidden City of Rulme, you can find it once you've finished the Diviner's Post quest. You can find him in the City of Zasterul.