She fell into a dream called the past. In the dream, she was still a wanton and high-spirited teenager, interacting with people she thought she would not interact with at all in the class, from unfamiliar people to the people she loved most. When she woke up from the dream, she left with that dream. It was just a dream when she left...
(The mouth is too honest and the body is upright) Zheng Yan
Zheng Yan is disgusted by his words but not by his actions. He will occasionally act mean to the people he knows and cares about. Yu Miao looks aloof on the outside and doesn't talk much. On the inside, he will play tricks on the people he cares about. His pretense is to attract Zheng Yan's attention (characters like Lei can be avoided actively)
PS: This article has explained their endings in the wedge, and the main text tells the past between them, which can also be regarded as a memoir. The first volume is when they were in high school, and the second volume is when they grew up (please avoid it if you don't like it, thank you)
Intention: Study hard and live well