"AA system?" Yue Xiaonao sat up from the bed: "I haven't passed A yet, you just choose a place, I invite, as the big sister of the dormitory, invite everyone to dinner."

"Let's be AA." Zheng Dan insisted on his own thoughts: "It's too much trouble to invite you, and we've only met for the first time, so it's not good for you to spend money."

"Okay." Mengmeng nodded in agreement.