Abyssal Corruption

Abyssal corruption, also known as abyssal corrosion and abyssal contamination, is a generic term for entities which have fallen under the Abyss' influence. Such entities have a negative effect on the world of Teyvat. 
==Overview==
The Abyss holds the power of the Void Realm, which is diametrically opposed to the powers of the Light Realm and the Human Realm, the latter of which the surface world of Teyvat belongs to. As a result, surges of Abyssal power have catastrophic consequences for Teyvat and humanity. The cataclysm 500 years ago is currently the most notable surge of Abyssal power; it was caused by an attack by monsters of Khaenri'ah, which were created from the Abyss' powers. Following the aftermath of Khaenri'ah's destruction, some of the humans-turned-monsters became members of the Abyss Order, who are capable of spreading Abyssal corruption.
Prolonged contact with Abyssal corruption causes negative physical and mental consequences. According to Chasca, once significant Abyssal corruption enters the body, it will irreversibly fuse itself to the internal organs. Physical ailments may include dizziness, general weakness, and a worsening cough which will eventually result in coughing up blood and eventually, one's innards. Hallucinations, memory loss, insanity, and "emotional issues" can also result from contact with Abyssal corruption, and prolonged exposure can drastically alter a person's personality by exacerbating their desires. 
===Purification===
Abyssal corruption can be purified or controlled through various means. Destroying sources of Abyssal corruption, depending on the entities' strength, can either permanently or temporarily halt their effects. The Fatui developed the Mokosh Device, a machine capable of clearing Abyssal corruption up to a certain degree.
The power of Celestia and the elements can repel Abyssal corruption. Those who are connected to the elements, such as Vision-holders, have greater resistance to Abyssal energy, including Forbidden Knowledge. Venti visits the Symbol of Mondstadt's Hero, which allegedly grew where Vennessa ascended to Celestia and holds the power of Anemo, to recover from the Abyssal corruption which poisoned him when he attempted to break the curse over Dvalin. In The Chasm, the unearthing of a Chasm Nail fragment caused both the Abyssal Dark Mud and the Celestial Lumenstones and Lumenspar to begin growing en masse throughout the mines. The Lumenstone Adjuvant, a particularly large Lumenstone which can be further enhanced by Lumenstone Ore and Lumenspar, is capable of clearing out Dark Mud.
The Traveler is capable of purifying Abyssal corruption without harm to themselves. This is likely due to their natural affinity for the elements (though the reason for this affinity is currently unknown). They purified one of Dvalin's teardrops; by comparison, Lisa felt a rejection from the tear that took the form of a sharp stinging sensation. They have also since purged Abyssal energy from Atea, Chuychu, and the Wayob of the Children of Echoes.
==Notable Occurrences==
The following are notable forms of Abyssal corruption which the Traveler has faced or has otherwise learned about.
===Tainted Blood===
Monsters from Khaenri'ah, most of which were created by the alchemist "Gold" Rhinedottir, have blood tainted by the power of the Abyss. This otherworldly power can have lingering effects when spilled on Teyvat soil; after the demon dragon Durin was slain over Dragonspine, its blood seeped into the land and revitalized the Frostbearing Tree, as well as crystallized into Crimson Agate which can then be offered to the tree and allow it to grow. This growth defies the power of the Skyfrost Nail, which caused the land of Dragonspine to freeze over several thousand years ago and led to the collapse of the ancient civilization Sal Vindagnyr.
During his battle against Durin, Dvalin also ingested some of its blood after killing it with a fatal bite to its neck. The poisoned blood and the wounds he suffered over the course of the battle inflicted great suffering, which the Abyss Order took advantage of after his reawakening 500 years later to pit him against Barbatos. When Barbatos, in the form of Venti, initially attempted to purify Dvalin, the Traveler and Paimon unintentionally interrupted them, causing the attempt to fail and getting Venti himself poisoned in turn.
===Defiled Statue===
The Defiled Statue is a Statue of The Seven in Barbatos' image, which was somehow plundered from Mondstadt by the Abyss Order as part of a project known as the Loom of Fate. The Abyss Order intended on using the Defiled Statue, the power of the ancient god Osial, and the core of the First Field Tiller to create a weapon capable of destroying Celestia. Because of Dainsleif and the Traveler's intervention, this project is currently at a standstill, although the Defiled Statue's fate has been left unaddressed.
===Dark Mud===
The discovery of a fragment of the Chasm Nail resulted in a surge of Abyssal corruption, primarily in the form of Dark Mud. The power of the Abyss in The Chasm appears to be at "war" with the power of Celestia, which also surged after the discovery of the fragment; Khedive likens humanity as being "akin to beans on a stone mill, on the brink of a clash between two great powers. [...] we are presently being crushed by these two forces — one from above and one from below — and we shall soon be turned into bean paste!"
During the events of Homecoming, it is revealed that the Dark Mud is actually a form of forbidden knowledge that was converted into its current form by the Divine Nail present in the area, which would remain unaffected by changes to Irminsul.
Later, when Mualani tells the Traveler about the disasters caused by the Abyss in Natlan, she will tell that the Children of Echoes' territory was overrun by "dangerous sludge surging from underground." It is not known, however, whether it is the same type of Abyssal corruption or a different phenomenon.
===Miasmic Tumor===
The "Miasmic Tumor" was the accumulation of filth absorbed by the Sacred Sakura, which was created by Makoto and planted by Ei to dampen the effects of Khaenri'ah's attack during the cataclysm on Inazuma.
During the events of Sacred Sakura Cleansing Ritual, the Traveler helps the shrine maiden Hanachirusato — who was actually a resurgence of filth herself, formed from the memories of the deceased Kitsune Saiguu — perform a major cleansing on the Sacred Sakura's roots and purge the "Miasmic Tumor."
Other Abyssal entities referred to as "tumors" include Abyss Tumors (Natlan) and Root-Consuming Tumors (Fontaine).
==Trivia==
* During the commission Big Pudgy Problem!, the Traveler finds a strange location with concentrated purple elemental dust. Dispersing the elemental dust causes a large number of Slimes to spawn, and Paimon afterwards remarks that there was "something spooky about those weird elemental traces." While this elemental dust has not been linked to Abyssal corruption, purple has been strongly connected to the Abyss when used outside of the context of Electro.
** This purple elemental dust is also seen on certain Statues of The Seven during the commissions Grateful to the Gods, in which Slimes may spawn after dispersing the dust. The elemental dust is noted to be brimming with elemental energy and possibly contain something that Slimes are drawn to.
===Etymology===
* The , which the Fatui use to absorb and contain Abyssal corruption, is named after the Slavic goddess , a Mother Goddess and the protector of women's work and women's destinies.
==Other Languages==
==See Also==
* Karma
* Tatarigami
==References==
==Navigation==
fr:Contamination abyssale
ja:アビスの汚染
vi:Ô Nhiễm Vực Sâu