青城不清

'Qing Cheng' is a proper noun, often representing some scenic spots like Mount Qingcheng. '不（bu）清（qing）' sounds a bit negative meaning unclean or confused. But the netizens use it as a kind of self-deprecating humor that even such a pure and beautiful place (or maybe oneself) cannot remain untainted, thus hinting at an uncontrollable world.