The five-year-old daughter of Lao Zhao and Zhang Da Niang, also known by her nickname Mushroom (previously called Ya Ya). She has not yet undergone Mind Opening, which is why she cannot walk or speak and is always carried by her mother. She has a round, adorable face resembling a mushroom. She is seen sucking her thumb and curiously observing her surroundings. Xiao Ranshu gives her the formal name Zhao Yujun, meaning Rain Fungus, with the hopeful interpretation that the Zhao family will produce a great warrior general.
