Pang Niu is the daughter of Aunt Pang who, along with her mother, sacrificed her life to protect Zhang Qing Niang during her journey after the Xiushui Village incident. She is mentioned briefly in the text as part of the tragic events that claimed the lives of both the Pang family members. Her death, along with her mother's, represents the human cost of the political turmoil and family separation that affected Xu Yunqi's life. The text does not provide extensive details about her character or personality, but her sacrifice is noted as part of the chain of events that led to Xu Yunqi being taken away by her grandfather. The loyalty and bravery displayed by both Pang Niu and her mother in giving their lives to save Zhang Qing Niang underscores the depth of their commitment to protecting the family during a time of great danger and uncertainty.