The Duke's residence.
Lu Yingjie and Lu Yaozhu went straight to the Duke's study when they got back to the Manor. While the women returned to their rooms, Madam Lu was worried by the events of the banquet, she sent everyone away including Lu Yiling.
Zhu Fengyin and Su Liya on the other hand returned to the main courtyard. Su Liya Instructed the servants to send over some water for Zhu Fengyin to wash her face. After washing up, Su Liya handed a towel to Zhu Fengyin to dry her face.
They waited for the other servants, Tian Tian included leaving the room before having any conversations concerning the banquet. It would put the royal family in a bind if the information was somehow made public.
Su Liya looked out the window and door to ensure that there was no one listening in Before she brought up the incident. This incident wasn't surprising since it was in the original plot. However, the author never revealed who arranged everything.
