Sunny turns to cloudy
Since when will Lin Chenyan start to be afraid of her leaving?
Autumn to winter
Since when did Chi Yuyou become farther and farther away from her?
Spring to summer
From that day on, she knew that from the words she said, they were no longer neighbors, friends, or besties, but strangers. But luckily, they met again from spring to summer.
. .
Conception:.