Tuoc's Trade Harbor is an important location in Cookie Run Kingdom, as players can load goods onto a ship here and send them off to earn Rainbow Pearls, a currency that can be used to purchase valuable items.

This offers many benefits to your kingdom, but it takes time to unlock. You have to meet specific requirements and complete the missions of Trade Harbor.

You can unlock Tuoc's Trade Harbor after completing the Trade Harbor questline in Cookie Run Kingdom, once you've upgraded your castle to Level Eight. The relevant quests you'll need to complete are:

But first you need to unlock the Seaside Market. You do this in a series of Cookie Run missions. To do this you need to have upgraded your castle to level six and cleaned up the land near the harbor.