This is a youth romance novel about secret love and redemption. It tells the story of the girl Xia Zhiwei's six-year secret love, and the affectionate bond between her and the boy Shen Yici that spans time and misunderstandings.
In high school, Xia Zhiwei always hid in the shadow of the teaching building, secretly watching the dazzling Shen Yici on the basketball court. This cautious love was the most secret concern in her youth. An unprovoked farce of confession brought the relationship between the two to a deadlock, with misunderstanding and alienation becoming a high wall between them. After the college entrance examination, the two fell apart. Xia Zhiwei buried this love deep in her heart, thinking that they would be strangers from now on.
The two met unexpectedly during a literary social event at the university. Time has faded away the youthful youth, but it has not been able to easily eliminate the barriers in the past. Shen Yici took the initiative to approach with a belated confession, but Xia Zhiwei hesitated because of past misunderstandings. When Su Manqi's troubles brought the misunderstanding to its peak, Xia Zhiwei chose to retreat, while Shen Yici left for a foreign country with regrets.
A late email revealed all the truth and made Xia Zhiwei understand Shen Yici's thoughts that had been hidden for many years. After going round and round, fate finally favored the lovers. Reunited in a foreign country, they finally held each other's hands tightly. From school uniforms to wedding dresses, from the sourness of secret love to the sweetness of being together, they used time to prove that true love will never be easily let down.
The book contains not only the delicacy and anxiety of secret love in adolescence, but also the warmth and healing of being together as adults. Those tender thoughts hidden in time are like fireflies in the deep sea.