Lin Xingchen and Gu Huaizhi are childhood sweethearts who have been at odds with each other for more than ten years. When the senior year of high school started, the two became roommates and continued to love and kill each other under the "Border of Chu, River and Han". Until Lin Xingchen discovered that this sharp-tongued top student had secretly stored ten years of photos of her on his phone - the moment she fell, the way she competed, and every look back she didn't notice.
"Ten years of filming?" She asked.
"Yeah." He looked at her with light in his eyes, "Because I want to remember everything about you."
From tit-for-tat to two-way secret love, from the sound of the piano on the rooftop to the school anniversary confession, they spent their entire youth writing the sweetest journey. It turns out that when I liked you, you had already liked me for a long, long time.
