C1487 Trace

Fourth Brother and I stayed in the room and watched for a long time. Fourth Brother went to the window, opened it and looked out.

"That day, before I left, Qin Lu was standing in front of this window. The window was partially open." I said to Fourth Brother.

Fourth Brother stuck his head out and looked, then turned his head and looked up.

"The 18th floor is the top floor." "No," I said