Authorities are all fussy about excess use of the sheets in public toilets, so they’ve installed technical spies and restrictions. Now the rolls are viewed by electronic controls to ration the sheets per user. After a certain number are pulled, they then shut off and allow no more.

Therefore, if your travels take you to Beijing public parks, and you’re required to use the rest room, be aware that there could be no paper to spare. Of course, when traveling you should always carry your own emergency roll.