The boy Du Lan liked met her brother and the two of them had inexplicably more interactions. She thought there was something going on, but she finally found out——
Duran: Heh, scheming 0.
Du Wei knew that the boy was his sister's crush and had been paying more attention to him. Although the boy didn't like his sister at the moment, he might still be able to change him successfully with his brother's help.
Finally——
Du Wei: Sister, listen to my explanation.
(The above text has been modified for comedy effects and is inconsistent with the actual plot)
Sister: I want to be your girlfriend, but you just want to be my sister-in-law.
Once I've finished my imagination, it's a very vernacular story.
Mission: All things are possible