This must be for Xu Shao's sake.

"Master Yin, have you arrived in the capital? I have prepared a banquet in Zecheng Building to welcome you." Yu Zecheng's respectful voice came from the other end of the phone.
"I'm in Imperial Capital now."Gregory Ferber said, "I'm at a dinner party now. I'll come to see you later."
"You're here?" Yu Zecheng asked in surprise, "Where are you? Is there anything I can do for you?"
When Yu Zecheng heard Gregory Ferber say that he was already at the dinner party, he felt surprised and anxious.
Logically...