Luo Qiao suddenly understood, that there might really be a mix-up with the significant other, that the one she had brought home last time wasn't her actual partner. With this thought, everything became clear to her, the one she brought last time must have been an impostor, and the one coming tomorrow should be the real girlfriend.
Little Uncle Yuan wanted to take advantage of the crowd to cover up his partner's embarrassment. With strangers around Yuan Family members, they wouldn't notice anything off about Little Uncle Yuan's partner. This way, he also had time to reintroduce his family to his partner, allowing her to get accustomed and without exposing the truth.
Little Uncle Yuan, truly a cunning fox.
Luo Qiao couldn't help but admit that she had guessed right, he simply wanted more of them to go, so that the Yuan Family wouldn't focus all their attention on Jin Jing.