The protagonist of the story, a second-year graduate student known for her dry humor and absent-minded nature. She spends her days juggling experiments, errands for her advisor, and online activities like browsing MSN and watching YouTube. She recently bought a scooter after her previous two bicycles were stolen or taken by her roommate Mao Mao. She accidentally entered a wrong music elective class and got detention for the first time in her life. She has a Type O blood type and weighs less than ninety jin, which disqualified her from donating blood. She signs under the name Mao Xiaoxu in the blood donor registry. She is noted for her looks, figure, brains, and dry humor according to Qiangwei.
