When she first met Cheng Che, his impression on Lin Wan was that of sunshine, just like... The sun.
Later, when he confessed his love and was rejected, he watched the girl he liked leave with someone else. He sat on the floor of the bar, drunk.
Lin Wan discovered that no matter how sunny a person is, his light will sometimes dim.
Later he whispered to her
"She agreed with me."
She smiled and congratulated him, but she was not very happy and felt a little sour.
When she was about to graduate, Cheng Che asked her
"I'm curious if you have any boys you like in the past three years."
"Yes!"
"Who?"
"I won't tell you."
Under his "realism", Lin Wan said to him
"Then this will be an agreement between the two of us. I will tell you on the night of graduation."
"That's settled."
In the end, he went abroad, and he didn't come to ask her about their agreement.
Intention: To be able to take up and put down a relationship