After spending 1000 Coins at the Vendor, I get a task to find the Yellow Chests. Some of them are hidden in hard-to-reach places, so I need to use Sword Dashes and Wind Dashes to reach them. In this guide, I show the locations of the Yellow Chests I have found so far, with screenshots showing exactly where to go. I update the guide once I find the remaining Chests.
Yellow Chest Locations
After spending 1000 Coins at the Vendor, he will task us with finding Yellow Chests.
There are multiple Chests to find. I have found two locations so far. One is down a well, and another is on an island that we can reach from the top of the Mausoleum using Sword Dashes and Wind Dashes.
I will update this guide once I find the remaining Chest.
Chest 1 – Isle of Neasied
Location: Near the entrance of Deimpo Mausoleum / Shortcut to Verdant Hollow.

I start by going down the well.

Then, I use a Wind Dash to reach the small island.

The Chest will be right in front of me.
Chest 2 – Top of the Tower of Knowledge

I start by going to the top of the Tower of Knowledge.

Then I keep following the Tower around until I reach the area above the bridge to the Mausoleum.

I use Dashes to reach the ledges on the roof of the bridge towers.

Once I reach the roof, I make my way to the edge.

Time to Fly!

I use Pandora’s Blade or any Sword with a Dash. I spam Click and use Wind Dashes to reach the island.

I follow the dark cave around until I reach the top.

The Chest is here.