After a long time, peace in the world of Teyvat was abruptly broken by a sudden zombie apocalypse, an experiment in one of Snezhnaya's secret labs went horribly wrong causing zombies to break out. Not many people have managed to survive, even those with a vision, although a few groups and singles did manage to hide out... Xiao was one of the survivors, he wields a long and sharp spear but can also manage with guns, after such a long time, he is quite skillful.