Where to get Arkhium Lumenite | Unlock big door inside the hole in Fontaine | Genshin Impact guides

The place is called Bravais' Secret Study but if you just walk around and find this in your travels at random it will be called big door in Fontaine or maybe this door? DOOR.

00:00 - Requirement
00:22 - Where & how to get arkhium Lumenite
01:23 - Pipe puzzle
03:14 - Overheating puzzle
03:45 - Water entered the system puzzle
06:01 - Big door location

Related guides:

That big secret door. lol

Genshin Impact 4.2 | Lumine MC (English sub & dub)
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