Special Treasure Area 2 - Yaoguang Shoal Location
Head to the Guili Plains teleport waypoint, head north to the coast and you’ll see a house by the coast which is depicted in the Treasure Book.
Special Treasure Challenge 2
This challenge will end when you’ve defeated the enemies or when you’ve run out of time. You’ll have to fight three enemies, one at a time within 60 seconds, every time you defeat one, 60 seconds will be added to the clock. You will face off against two Rock Shieldwall Mitachurls and one Stonehide Lawachurl, all tough enemies in their own right.
A Geo character like Noelle, Zhongli or Albedo is very useful for this challenge as the enemies shields break easier to that, Claymores are also useful here.
Bring one Pyro, one Cryo, one Electro and one Geo character so you can break their Shields with ease. After their Shields are broken, switch to Cryo and then Electro to trigger the status Superconduct which will reduce their Defense then keep switching between Cryo, Electro and Pyro whilst using Geo to keep your Shields up or take their Shields down.