Rear of the Japan Consulate, the People's Liberation Army. The PLA were not visible from the street, this was a second line of defense and took some wandering around to get the shot.
This shot resulted in my meeting several representatives from the Public Security Bureau (police) and the PLA, with the expected questions, etc. I was summarily escorted from the area and loaded into a taxi, directed to take me away. Thankfully, there no issues and I was permitted to keep my camera and CF cards.