Xiaotu has blue eyes and grey hair tied in pig tails with red ribbons. She wears a standard highschool uniform.
Xiaotu is said to be gentle and sensible by Haoyi due to her taken care of him most of the time. She likes to tease Haoyi for fun. She was kind of jealous of Haoyi's harem but in truth very happy that her cousin was not alone and seeing him happy.
"Ge. I know. Many people are misunderstanding. But remember, in this world, there is a rabbit (Tuzi) who's willing to understand you - and like you".
Xiaotu cares about her cousin Haoyi so much that she helped him trying to make his life better for him so that he doesn't feel sad or lonely. She played a part of being her cousin's girlfriend as a request for the time being. Xiaotu became happy for Haoyi that he's doing alright and she has no need to worry during her last visit to him.
Xiaotu's relationship with her uncle, Tianming, is unknown.
Xiaotu's relationship with her aunt, Mrs. Jiang, is unknown.
"Though Ge Ge is kind of passive, he is very kind to others. I hope you can keep understanding him - and be good company to him".
Xiaotu met her cousin's harem during her visit, enjoyed teasing them, and giving them a hard time due to the love they have for Haoyi. She even told Xia Zitong that she's Haoyi's first girlfriend. Later, due to her mistakes, Xiaotu talked with the harem about her and Haoyi's childhood past. In truth, Xiaotu said to them that when she saw them with Haoyi she was happy but was afraid of her cousin getting hurt and asked them to forgive her to which they did as they found out she was testing their personalities for Haoyi. Xiaotu hopes for them to be a good company to her cousin.
"Is this Sandy? AH. In real person! I'm your faithful fan".
Xiaotu is a real big fan of Yushan and was so excited when she came to visit Haoyi meeting her in person.
Xiaotu tried so hard to get Zhengdong to become Haoyi's friend in grade school to which she did after when she overheard her cousin stand up for Zhengdong during their cleaning duties.