C543 Uncover sheets

I hastily stepped back as my mind buzzed. Why is he here?

While I was still in a daze, I heard the sound of someone digging for a key outside the door.

Sun Dongkai knocked on the door but did not open it. He wanted to use his key to open the door, he had Cao Li's key!

I didn't have time to think about it. I started to get out of the way, looked around