C1650 Tracing

I saw the agent's number in Ji Changyou's study. Ji Changyou has been here for a long time, and this house has already been rented for a long time, so he probably won't leave his agent's number. Now, with the agent's number, it means that he wants to change his room, but you can see that some parts of the room are new.

"So, I specifically came here to ask