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An ancient, bizzarely-shaped autonomous machine.
It is said that this was heavy-duty engineering equipment left behind by a nation that has been destroyed. The gear system on its "head" can grind its way through even the hardest bedrock. If this was the case, then carving out tunnels with which the forces of this nation might access the whole continent would have been a thing of great ease.

The Ruin Serpent is a Normal Boss challenge found in The Serpent's Cave, The Chasm: Underground Mines, Liyue.

In order to access the boss, the player must complete part of the World Quest Chasm Spelunkers.


Claiming the Trounce Blossom after defeating the boss offers the following exclusive Character Ascension Material:

The blossom also offers the following Artifact Sets:

Item Traveling Doctor.png2-3★ Set Traveling Doctor
Item Instructor.png3-4★ Set Instructor
Item The Exile.png3-4★ Set The Exile

The cost of claiming the Trounce Blossom is Original Resin Original Resin ×40.

Rewards and difficulty increase with Adventure Rank (AR).

At all World Levels, Ruin Serpent rewards Adventure EXP Adventure EXP ×200.

Mora Character EXP Companionship EXP Ascension
2 Stars 3 Stars 4 Stars 5 Stars
0 36 3,450 138 30 2–3 1–2 2–3
1 37 3,450 138 30 2–3 1–2 2–3
2 41 3,650 144 30 Previous Rewards +
2–3 1–2 2–3
3 50 3,850 155 35 2–4 3–4 0–1
4 62 4,125 166 35 Previous Rewards +
2–4 3–4 0–1
5 72 4,450 178 40 3–5 2–3 1–2 0–1
6 83 4,725 189 40 Previous Rewards +
3–5 2–3 1–2 0–1
7 91 5,200 200 45 3–5 2–3 1–2 0–1
8 93 6,000 200 45 3–5 2–3 1–2 1

Artifact drop ranges are primarily sourced from the Genshin Data Gathering team.


Phase Physical Pyro Hydro Electro Cryo Anemo Geo
Normal 70% 10% 10% 10% 10% 10% 10%
Charging 370% 310% 310% 310% 310% 310% 310%
Level Scaling
1 1,175 152 505
5 2,646 255 525
10 4,627 407 550
15 8,340 643 575
20 13,618 1,004 600
25 19,062 1,371 625
30 25,360 1,639 650
35 34,043 1,974 675
40 45,534 2,450 700
45 61,171 2,899 725
50 83,897 3,447 750
55 108,862 3,970 775
60 141,743 4,604 800
65 186,350 5,326 825
70 234,434 6,122 850
75 293,344 7,508 875
80 378,186 8,894 900
85 483,170 10,279 925
90 593,605 11,419 950
95 726,859 13,099 975
100 887,360 14,773 1,000

Note that HP and ATK values may change in Co-Op, some Quests, and certain Domains. The change usually involves multiplying some of the values by a constant scale factor.

Abilities and Attacks

Ruin Serpent

Attack names are unofficial.

Energy Drain
At the start of the fight, if the player's Lumenstone Adjuvant is equipped, its stored energy will be reduced to 2.

Equipping the Lumenstone Adjuvant after the fight starts will bypass the energy drain.

Oozing Concretions
Burrows into the ground before resurfacing, creating 4 sources of Oozing Concretions at the corners of the arena. Oozing Concretions can be destroyed using the Blooming Light released by the player's Lumenstone Adjuvant.
  • Alongside the Oozing Concretions, a yellow rock will also be created. Destroying the yellow rock will recharge 3 energy for the Lumenstone Adjuvant.
  • This ability is disabled in the Spiral Abyss.
Rolls its body on the ground in an arc, dealing 40% ATK as Physical DMG on contact. This attack cannot be evaded with dash i-frames.
Charge and Drill
Charges towards the player and burrows, dealing 30% ATK as Physical DMG on contact. It then resurfaces and plants its drill into the ground, dealing 70% ATK as AoE Physical DMG. The charge cannot be evaded with dash i-frames.
Sand Tomb
Burrows and resurfaces, creating a large Vacuum Field that sucks players towards the center while dealing 10% ATK as Physical DoT. If it comes in contact with the player while burrowing or resurfacing at the beginning or end of this attack, deals 70% ATK as Physical DMG.
Bomb Barrage
Charges by drawing power from the Oozing Concretions, before shooting a barrage of projectiles at the player, each dealing 40% ATK if two sources were absorbed or 30% ATK if a single source was absorbed as Physical DMG on hit. Gains 300% RES to all DMG while charging.
Charges by drawing power from the Oozing Concretions, before releasing a massive blast downwards, dealing 200% ATK if two sources were absorbed or 100% ATK if a single source was absorbed as AoE Physical DMG. Gains 300% RES to all DMG while charging.

The two Oozing Concretion sources that the Ruin Serpent absorbs to perform this attack are close together. If the Lumenstone Adjuvant is enhanced to level 8, it will be able to destroy both sources at once due to the increased AoE.

During Bomb Barrage and Shockwave, the Ruin Serpent will expose 4 weak points in the form of its glowing segments. A segment will be broken once hit, indicated by smoke and electric spark effects. Destroying an Oozing Concretion source that the Ruin Serpent is attempting to absorb with the Lumenstone Adjuvant will also destroy 2 weak points. Once all 4 weak points are destroyed, the Ruin Serpent will be temporarily paralyzed.
  • In the Spiral Abyss, due to the lack of Oozing Concretions, the Ruin Serpent can only be paralyzed by striking its weak points.

Haftvad the Worm

The quest-exclusive variant of the Ruin Serpent appearing in the Wherefore Did the Spiritstone Descend? World Quest, Haftvad the Worm, behaves slightly differently in combat. Haftvad the Worm can only create 2 sources of Oozing Concretions as opposed to 4, and the Charge and Drill attack is disabled. The fight also ends once the boss reaches ~30% of its health as a cutscene triggers shortly afterwards.


2 Achievements match the category selection:

Achievement Category Description Primogem
Overflowing Light Wonders of the World Wonders of the World Destroy 2 Oozing Concretions with 1 Blooming Light during a battle against the Ruin Serpent. 5
Ouroboros Challenger: Series V Challenger: Series V Destroy Oozing Concretions to paralyze the Ruin Serpent while it is gathering energy. 5


Video Guides


Chasmic Serpent

The valleys shift and the gorges quake. The ancient realm's war machine rises anew! Delve into the courts of stone and destroy the sleeping monster that rampages within The Chasm!

Chasmic Serpent.png

Other Languages

LanguageOfficial NameLiteral Meaning
EnglishRuin Serpent
Yíjī Jùshé
Ruin Python[• 1]
Yíjī Jùshé
Iseki Saapento[!]
Ruin Serpent
Korean유적의 뱀
Yujeok-ui Baem
Snake of the Ruins
SpanishSerpiente de las RuinasSerpent of the Ruins
FrenchSerpent des ruinesSerpent of the Ruins
RussianЗмей руин
Zmey ruin
Ruin Snake
ThaiRuin Serpent
VietnameseMãng Xà Di TíchRuin Python
GermanRuinenschlangeRuin Serpent
IndonesianRuin Serpent
PortugueseSerpentes das RuínasSerpent of the Ruins
  1. Chinese: 巨蛇 Jùshé refers to pythons, but can also be interpreted literally as "huge snake."

Change History

Released in Version 2.6