Although most Chinese people don’t mind having their photo taken, it’s always best to ask before clicking. A quick showing of the image in the digital viewer usually makes things easier. Airports are off limits for photography, although snaps from inside the terminal are unlikely to be reprimanded. Photographing military installations is forbidden and can result in a lot of hassle, and cameras are not welcomed at public disturbances. Temples often charge for taking pictures inside and it’s customary to refrain from doing so while services are in progress.