If not wrong, during the mid 1990s my family went to Beijing
before migrating to Singapore, and when we were at the Tian-an-men
Square, there parked a mobile (but old-looking) toilet, and I saw
many people using it.........
Worse, there are no doors covering up the cubicles, and that the
waste matters were not flushed at all.........they were simply
resting at where they were......very smelly and very
unhygenic.........and that typically the so-so "martons" were full
of un-flushed shit!
But nowadays it seemed that to cope with the 2008 Beijing Olympics,
the mobile toilet was removed........not seen anymore.