[If you stay, what kind of work can you do?]
According to the rules, if you're a guest, you don't need to work.
In Flower Moon Building, what else besides guests is there?
There are only courtesans.
So Zhu Pingniang knows, her Ah Bai isn't staying to keep her company, but to... join Flower Moon Building.
"?"
Zhu Pingniang is completely confused now.
"If you can be here, why can't I?" Li Zhibai asked.
"Even for me, I used a decoy at the beginning." Zhu Pingniang said.
"Decoy?"
Li Zhibai tilted her head.
Zhu Pingniang said, "That's not important."
"Ah Bai."
"Hmm?"
"If I inform Profound Sword Bureau now, telling the junior brother you want to be a courtesan, do you think he'd bring everyone he can to tear this place down?" Zhu Pingniang said.
Li Zhibai blinked.
Sikong Lixu is the kid she watched grow up, indeed he calls her 'Aunt Grandma', but why mention him now.
