Hidden Palace of Zhou Formula is place in Liyue where you can access the Domain of Blessing: Frost in Genshin Impact.
Before you can access the domain, you have to unlock it by solving the puzzle.
Here’s how you can unlock the Hidden Palace of Zhou Formula in Genshin Impact.
The domain is located just north of Wuwang Hill / east of Qingce Villa.
It’s at the top of the mountain so you’ll need to climb for some time. As you reach the area, you should get rid of the Electro Cicin Mage first.
How to unlock the Hidden Palace of Zhou Formula
There are pyro statues to light around the area. One of them is blocked by the wind barrier.
To get in, climb on the nearby boulder. Jump from the top and land inside the barrier. Use a pyro character to light the statue.
You will then see a Geo statue / monument on the other side, surrounded by some pyro statues and a wisp statue.
Light up the pyro statue first. Go to the wisp and it will lead you around the place. Follow the wisp around.
Along the way, the wisp will show you the location of other pyro statues.
Light them all up. You can ignore the mobs if you want to.
Eventually, the wisp will get back to the wisp statue.
The Geo statue will then be unlocked. To activate the Geo statue, use your Geo skill or some other Geo character’s skill.
The domain will then be unlocked.
You will now be able to access the Domain of Blessing: Frost 1 if your Adventure Rank is 30 and above.