Guizang Hidden Palace Formula is a property in Genshin Impact which is initially closed by a riddle.
You can find the puzzle in the middle of the Luhua Pool in the Liyue area.
The entrance to the domain is under a large blue barrier, and in order to break through the barrier you must use a Pyro character to ignite certain pillars of fire. You need Diluc, Amber, Bennett, or Xiangling to light the pillars.
The pillars that you need to light are the three that are in front of the tallest structures in the circle, as you can see below.
After activating these three elements, the rest will light up and the floor will open, giving you access to the domain. Once down, standing on the slab activates an airflow that allows you to easily climb back up.
The property offers two exploration options: Travel to the bloody sky Y Adventurous rides in the moonlight, which drop Primogems, EXP, Linyue Shrine of the Depths Keys, and other items. Note that you need Adventurer Rank 30 to access Voyage to the Sanguine Sky and Adventurer Rank 35 to access Travels of the Moonlit Venturer.
Source : polygon.com