Almost EVERYDAY, this group of senior citizens would sit around the courtyard playing Chinese Chess. They were too ENGROSSED to pay any attention to anyone walking there, including photographers. A good way to stimulate the brain to prevent Alzheimer I guess....the retirees need activities to keep themselves occupied and the authorities had set up an area in Chinatown with tables , seats and sheltered from the weather . I've seen some students doing sketching of the seniors while I was photographing them. Some tourists were also seen taking photos of them too.