Buyu is Xiao Qing’s loyal maidservant, described as a dowry maid from Xiao Qing’s original family. She acts as a trusted assistant, following Xiao Qing’s orders without question. When Xiao Qing asks her to take Huihui to the room, Buyu obeys. She is present in the Ye household and later assists in the manor raid. She is a minor but reliable supporting character, representing the faithful servants in the story.