Xian

, also known as , are immortals in Chinese mythology. Some Xian are also which are powerful incarnated Elementals similar to True Ancestors. 
==Characteristics==
Xian is a term for Taoist immortals in Chinese mythology,Fate/Grand Order material VIII - Consort Yu translated by Kinalvin it includes naturally created Zhenren that are Divided Spirits from the Fusang Tree, humans who ascended through training and , powerful higher order beings that are Chinese mythology's equivalent to genuine Gods (as opposed to Divine Spirits). The Xian are beings who sought eternal truth who perfected their bodies, achieving eternal life and youth through secret Xian Arts. The Shenxian are beings who possess overwhelming Saint Graphs and spiritual standings and are covered in powerful Mystery. Taigong Wang describes his teacher Yuanshi Tianzun as the greatest Shenxian ever.Fate/Grand Order: Cosmos in the Lostbelt - Tunguska Sanctuary: Non-Primate Lebensraum, Section 10: Eulogy to the Star of Primates II It was possible to become a Shenxian during the Age of Gods through training, as Taigong Wang became one at the end of his training.Fate/Grand Order - Taigong Wang's profile translated by ComunCoutinho 
According to ancient Xian lore, female deities are capable of out-of-body experiences, while male deities need to gather Magical Energy to create temporary bodies. Wuzhiqi's female remote body is a solid, physical body, which suggests she's a male deity.The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 4 Part 6 
Consort Yu is a Zhenren in addition to being a . She demonstrates traits and abilities similar to a True Ancestor, such as rapid regenerative capabilities that make her nearly unkillable, as well as the ability to draw upon the inexhaustible Magical Energy of the world and use it as her own.
In Eastern Magecraft, the power of flight is seen as proof of being a Xian.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 2
===Xian Arts===
The Xian and Shenxian use Philosophy Magecraft for their Mysteries called and (Taoist Arts). They utilize them through their ,The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Chapter 2 which connects them to the Philosophy Foundation, a supergiant Mystic Code that is fused with the planet that was created by the Ten Officials of the Summit Court during the Age of Gods. It is effectively a simulated, artificial Root that acts as the foundation for Philosophy Magecraft, and its creation took such intense coordination among the Ten Officials that replicating the effort would not be possible in modern times.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 3 
The Xian all use the same Philosophy Foundation, but the spells they are allowed to use are restricted, only those who possess special Philosophy Keys are able to access the Privileged Domains of the Philosophy Foundation which allows them to use Shenxian level Magecraft. 
Qin Shi Huang was able to keep the Xian Arts working for over 2000 years, and could produce talismans that uses a spell capable of sealing away Gods. With it, they were able to seal Tamamo Vitch Koyanskaya's Saint Graph preventing her from fighting back.Fate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Section 10: Dashing Through One Thousand Li Through the use of biochemistry based on Xian Arts and the Fusang Tree's secrets, Qin Shi Huang was able to make huge leaps in medical science allowing him to eradicate all manner of disease, hunger, and pestilence, and through elixirs he was able to enhance his soldiers and defeat all the other countries in the world. After witnessing the effectiveness of the medicine that Qin Shi Huang created, Sherlock Holmes doubted that modern medicine or Magecraft would be able to make a drug that was as effective.
Many Xian utilized in addition to their Xian Arts, such as Taigong Wang who uses the God-Striking Whip. Taiyi Zhenren was able to create multiple different weapons and constructs such as Nezha's body, a living Baobei and he gifted her many different weapons such as the Demon-Slaying Sword, the Phantom-Slaying Blade, the Ghost-Binding Rope, the Evil-Conquering Staff, the Embroidered Sphere, the Wind Fire Wheels, and the Fire-Tipped Spear. 
Ashiya Douman was able to make use of a Pseudo-Philosophy Key to utilize a powerful Xian Art spell which originated from Vulture Peak, that according to him could only be stopped by an Anti-Purge Defense.Fate/Grand Order: Cosmos in the Lostbelt - Hell Realm Mandala, Heiankyo - Flash of Roaring Thunder, Act 15: Sakata Kintoki Is Here!
==Fusang Tree==
The is a special tree that is known as a "tree of life" as it is the the crystallization of the secrets of the Xian, a treasury of wisdom that harbors the Mysteries of all kinds of life.Fate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Section 7: Qin Shi Huang The tree is folded into itself in its own special pocket dimension, allowing it to store vast amounts of information on the secrets of all life.Fate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Section 16: The Crimson Beauty Under the Moon The Fusang Tree is considered the key to the Xian realm's Mysteries, as one can use it for a vast array of biochemical applications through Xian Arts that is impossible to do with other Magecraft systems according to Holmes.Fate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Section 12: Travelers of the Century 
True Xian are said to be something akin to Divided Spirits of the Fusang Tree acording to Qin Shi Huang. Through this connection, Consort Yu was able to to possess the Fantasy Tree Mayall as she was a Zhenren and a true Xiannu.
==Known Xian==
*Nezha (Originally a Da Luo Xian)
*Wuzhiqi
*Ten OfficialsThe Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 3 Part 3The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 4 Part 3 
*Taigong Wang (Shenxian)
*Yang Guifei
*Consort Yu (Zhenren)
*Zhang Jue (Shijiexian)
*Lostbelt Qin Shi Huang (Artificial Xian)
*Taiyi Zhenren
*Yuanshi Tianzun
*Lingbao Tianzun
*Daode Tianzun
*Twelve Golden Immortals
==Development==
===Creation and Conception===
Before Gilles de Rais was chosen for Fate/Zero', Gen Urobuchi had trouble thinking of a Caster-class Servant for the Fourth Holy Grail War, so he asked Kinoko Nasu if he can use a Chinese Xian. It was when Nasu explained the Western-only rule of the Fuyuki system. Furthermore, Nasu states that Xian would be too strong.
==References==
Category:Chinese historical and mythological figures
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Category:Non-humans
Category:Characters by species
Category:Divided Spirits
Category:Terminology in Fate/Grand Order
Category:Terminology in Fate/stay night
Category:Terminology in Lord El-Melloi II
Category:Terminology in Fate/Zero