Xanshi was a planetoid located in Space Sector 1313 with a diverse range of sentient life. One of its members, Reever, attracted the attention of the Guardians of the Universe who selected him to serve in the Green Lantern Corps. Reever defended the planet from a military expedition from Toomey VI but was ultimately defeated by Arkkis Chummuck, who was awarded a Green Lantern Power Ring due to his accomplishment and chose to maintaining peace between Xanshi and Toomey VI.
The world remained in obscurity but eventually became an important location during the crisis involving the Anti-Life Equation. At the time, Green Lantern John Stewart joined the Martian Manhunter in investigating the world where they found the inhabitants stricken with a communicable disease. Stewart, in his overconfidence in his abilities, decided to venture ahead without J'onn J'onzz as the Anti-Life Equation had begun to manipulate the weather as well as turned it against them. During his investigation, Stewart discovered a Blink Bomb in the planet's core which threatened to destroy it and worse was the fact that it was coated in the color yellow. This prevented him from stopping the doomsday device which exploded and devastated Xanshi as well as sending it crashing into its sun thus killing all the native inhabitants.
The destruction of Xanshi forever scarred John Stewart who blamed himself for its destruction and nearly committed suicide as a result of his decision. The news of the planet being destroyed later travelled to Okaara where the last of the sentients of Xanshi known as Yrra Cynril learnt of the involvement of the Green Lantern. She decided to seek vengeance by killing off any Green Lantern she found as well as finding the one responsible for her homes destruction: John Stewart, in order to kill him and avenge her people.
During the Blackest Night, Black Lantern Power Rings were responsible for reforming the planet Xanshi which attracted the attention of Green Lantern John Stewart to investigate. Once on the dead world's surface, he found a discarded Green Lantern Power Battery which belonged to the Fallen Lantern Driq after which Stewart was attacked by the undead members of the Black Lantern Corps.