In the cultural relic restoration room on the west side of the Forbidden City, Zimmer is using deerskin dipped in a special solution to wipe the rust spots on the bronze vessels. The afternoon sun shines through the screen window, casting tiny spots of light on the thousand-year-old bronze square. He suddenly stopped moving and unconsciously touched his chest with his right hand - there was a broken bronze key hanging there, after the accident three years ago.
