Xiang Yun was originally a cloud, but was later transformed into a fairy by the Red Thread Master and worked in the Marriage Pavilion. Xiangyun volunteered to help her master to find Immortal Chu Kong, the God of War, a marriage partner but later got caught auctioning his marriage. The two quarrelled and accidentally messed up the red thread of fate, leading to an entanglement between the two that last for several lifetimes. However, their fate started way earlier, in a memory that both of them didn't have.