In the banquet hall.
These guests were all invited by Shen Yu and the others. Qiao Xi did not participate in inviting them at all.
The Zhao family came because Qiao Xi had saved the life of a member of their family. The other families were inextricably linked to the Shen, Qin, and Xue families. They also knew Qiao Xi's identity, so they would naturally rush over to attend her birthday banquet.
When Qiao Xi went to Imperial Capital last time, she had once caused a stir. Everyone knew that these great families treated Qiao Xi like a pearl in their palm.
Moreover, everyone knew that Qiao Xi was married to that master who wasn't an ordinary person.
When everyone entered the banquet hall, they realized that the second young master of the Gu family, Gu Yao, was actually mixing drinks for everyone. Everyone was even more certain of Qiao Xi's status.