Having been to China, their public toliets are not up to Western standards in terms of smell and cleanliness. Either these are equivalent to Western-standard and they trying to curb abuse because they are attempting to be equitable, or they are trying to boost productivity via public shaming. I saw the locals would just squat and smoke while playing on phones while being very exposed without any care in the world. I was shocked at how widely accepted that was and that was in like a public kybo. Never seen anything like it.