Su Pan'er tried over and over again, but still couldn't figure out how to use the iron piece.
Of course, she never thought of destroying the iron piece, and after some thought, she finally put it back into the envelope.
She slowly walked to the corner of the wall, and with a gentle press on a hidden spot, a small noise followed by the revelation of a hole. Su Pan'er reached in and took out the Qianji box hidden inside.
This Qianji box had been hidden in the wall corner all those years ago, and surprisingly after so many years, it was still there in perfect condition.
Turning her head to glance at Little Yanyan, who was sound asleep, she fiddled with the Qianji box and its mechanisms opened up, revealing the treasures she had stored for many years—the silver banknotes she had hidden inside, and the letters Qin Yi had sent her back then!