How to farm Piece of Aerosiderite in Genshin Impact

Piece of Aerosiderite

To farm Piece of Aerosiderite, you need to complete Hidden Palace of Lianshan Formula, a Domain of Forgery located in Liyue.

Piece of Aerosiderite are rewarded for finishing Hidden Palace of Lianshan Formula—Domain of Forgery: Trial Grounds of Thunder II, and you can receive between two to three of them per run.

To enter Hidden Palace of Lianshan Formula II, you need to be Adventure Rank 21. It is recommended to have your party about Level 36 and characters that use Cryo and Pyro.

Hidden Palace of Lianshan Formula is northwest of the Statue of the Seven south of Mingyun Village.

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Hidden Palace of Lianshan Formula location

Hidden Palace of Lianshan Formula rotates the rewards you get based on what day of the week it is.

On Wednesdays and Saturdays the domain is called Trial Grounds of Thunder, and you can get the Piece of Aerosiderite Weapon Ascension Material.

On Sunday, you can choose whatever domain you desire.

To complete Trial Grounds of Thunder II, you must kill all 16 enemies within 360 seconds, over two waves.

The 16 enemies to eliminate:
- First Wave
  - Electro Slime x17
  - Large Electro Slime x3
  - Mutant Electro Sliime x3
- Second Wave
  - Large Electro Slime x2
  - Mutant Electro Slime x1

Due to the Electro enemies, it is wise to bring along characters that inflict Pyro and Cryo Damage.

When inside a Domain of Forgery you are inflicted by a Ley Line Disorder. This is a debuff that is never removed throughout the duration of the Rift.

In Trial Grounds of Thunder II, you have the following Ley Line Disorder:

Your character will be periodically inflicted with Engulfing Storm, continuously draining your Energy until the inflicted Electro element is removed.

If you have completed the domain successfully, to claim the rewards, you need to spend 20 Original Resin or use a Condensed Resin to receive double. You do not have to claim the rewards if you choose not to do so.

Rumors of sea monsters are commonplace in Liyue, since the other-shore is an unknown region that lies outside of Teyvat. Without the protection of The Seven, all that lies beyond is unknown chaos. Only power beyond the order of Teyvat is able to stain the power of Rex Lapis black.