Synopsis：Novelist Li Tang (Zhang Benyu) receives a call from his former lover, Gao Li (Wang Jiajia), informing him that she will be visiting his city for a three-day business trip. Over the course of these three days, they revisit their past, experience the present, and imagine the future. As their time together nears its end, Gao Li takes Li Tang to Xuanwu Lake, where she recounts a story from long ago. Struck speechless by her words, Li Tang finds himself disoriented, unsure of what moment in time he is truly inhabiting.