Mo Xiuqin is Mo Xiufang's youngest sister. She is rebellious and resentful of her family dynamics. She overheard the conversation between Jiang Xiaoci and Mo Xiufang and confronted her third sister, accusing her of self-righteous sacrifice and brainwashing. She is described as not doing much around the house and mocking her sister's dedication to the family. She had a confrontation with her sister about who should sacrifice for whom, showing a defiant and independent attitude.