Genshin Impact’s Requiem of the Echoing Depths Archon Questline will take you to the depths of The Chasm, where mysteries of Khaenri’ah, the Inteyvat, and the Twilight Order will unfold. The last segment of the quest chain, calledThe Black Serpent Knights' Glory, requires you todestroy all the charging devices.
There are four charging devices around the chamber in the Nameless Ruins. Read on to find out how to break them.

From the chamber in the Nameless Ruins, you’ll find four streaks of light that connect to galaxy-like portals. Jumpbehindeach galaxy-like portal to reach a clearing with a locked charging device. Once you get close,two Abyss Mageswill spawn. You’ll encounter a mix of Cryo, Pyro, Hydro, and Electro Abyss Mages, so make sure to have Elemental shield breakers in your party.
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After defeating the two Abyss Mages, the charging device willunlock. Attack itwith Elemental Skillsuntil it’s destroyed. After,interactwith the galaxy-like portal in the room to bring you back to the first chamber, where you can then work on destroying the other three charging devices.
The charging devices can be destroyed inany order. But after destroying the fourth, a galaxy-like portal willnot spawnin the room, so you need to manually go back to the chamber to meet Dainsleaf and Halfdan by following the path from the upside-down Teleport Waypoint. Likewise, if you choose to exit the area before completing the quest, you need to manually run back to the chamber to continue.

Check out our guide onHow to unlock the upside-down Teleport Waypoint in The Chasm Underground Mine in Genshin Impactto make it easier to navigate this questline.