Each Day in Zashien they have 3 Goals to accomplish and pay copper for:
1. Do a mission from the Campain, with a bonus copper payout for doing the bonus

2. Hunt a Boss (Bounty) with a bonus copper payout for doing it in hard mode (so you have to beat the campain with at least one character to pull it off)
3. Do a PvP match of some type/sort and win (this has the highest copper payout)
You don't have to do them that day, as you can have up to 3 Goals of each type in your quest log at a time.
But wait there's more.
Also Introduced is Nicolus the Travler, a NPC that is in a random location for a week and will trade items for collectables. For example his first location was Pre-Searing and he was trading for 20 Red Irisis (which can only be found in Pre-Searing and in Eye of the North the Charr Area)
He also is accompinied by a Yak? that takes a much larger quantity of whatever collector item he wants. For exchange you can get a very large variety of things, from summoning stones, PVE consumables, fireworks, you name it.