Akkala Tech Lab is one of the two labs in Zelda Breath of the Wild that can supply Link with Ancient Gear. Here is how to find and use it.

In 'The Legend of Zelda: Breath of the Wild,' some of the deadliest foes you'll run into are Guardians, but you can defeat them easily with a good shield, Ancient Arrows, or the Master Sword.

Remember that an ancient arrow (also sold at the ancient tech lab) to the eye will take down Guardians in one clean shot. All you need to do is aim for the Guardian's eye - place the shot well and ...

You need to get your hands on an Ancient Arowana in Tears of the Kingdom for a side quest. Here's where to find one and its exact location.