Mao was asked to model a painting by a professor in exchange for a letter of recommendation to the museum. He was told “for art” and hesitated to take off his clothes. An obscene pose, a naked model in front of a classmate. Mao is confused by the demands that gradually become radical, but the shame of being stared at every corner of her body and drawing turns into excitement. “Teacher, I’m embarrassed … Oh, everyone is watching me …!” A pure female college student shakes her big tits and leaks the tide.