Xiao Jiu, the night king, was named after a character in Dear Living Ancestors. She is Princess Dongling and the first love girlfriend of Huozu. In the plot, Xiao Jiu and his living ancestors used to be lovers, but they separated for various reasons. Later, Xiao Jiu became the princess of Dongling, and the living ancestors became wandering warlocks. Although they met again, Xiao Jiu's identity and past emotional experience became the biggest obstacle between them. In the end, Xiao Jiu gave up his feelings and left his living ancestors for the country and his relatives. However, Xiao Jiu's feelings for the living ancestors have not changed, and she has been silently paying attention to the life and work of the living ancestors.