https://www.reddit.com/r/Genshin_Impact/comments/kj034y/12_dragonspine_ruin_guard_cipher_solved/

There’s also one in sumeru- Records: Code “Thurisaz” that goes “-..1-..1.-.3-…1-1.2-3-2-2.-..” so there may be more in other places not just dragonspine

The numbers is a code used in rome
the message is about how the basically failed to defend khearian

Sleeping Ruin Grader Quest: the 9 code are from sleeping Ruin Grader to activate then you need to activate 4 switch. the 3 switch already expose The last switch was in case in a magical ice case. This the location

 Click to Enlarge

Already solve the quest its from the sleeping rune grader giant quest.. 9 code are for the giant who's sleeping on the top. Once you got you will unlock treasure.

 Click to Enlarge

My theory is, those numbers are maybe some sort of coordinate. Maybe those ruin guard trying to point at something...
I'll continue to explore dragonspine and try to figure out what the numbers means.

"For the nation, we can't forgo this skyborne power, but we failed"

https://twitter.com/iqrar99_/status/1341950574250475522?s=20

cant find the first 2 screenshots

Just found this, although i don't get how it works at all https://youtu.be/gu408CsfD1Q

https://www.reddit.com/r/Genshin_Impact/comments/kj034y/12_dragonspine_ruin_guard_cipher_solved/?utm_medium=android_app&utm_source=share

Hu 16180 3.2- .3-.23-.32-32.-3..
Hu 21030 ..2-223-.32-322-..3-..2
Hu 81122 23.-.33-.32-2.2-3..

Hu 16180
Hu 21030
Hu 31122 2.2-3..-232-223-..2-.32
Hu 43218 3.2-..3-.23-3.3-..3
Hu 57104 .32-32.-322-.3.
Hu 68513 .3.-33.-22.-23.-..3.23-..2-3..
Hu 73011 .2.-..3-2.2-3..-.23
Hu 81122
Hu 96917 3.2-223-322-332-3..-233