前門打虎，後門打狼

to beat a tiger from the front door, only to have a wolf come in at the back (idiom); fig. facing one problem after another

front / forward / ahead / first / top (followed by a number) / future / ago / before / BC (e.g. 前293年) / former / formerly

Qianmen subway station on Beijing Subway Line 2

front door / main entrance / honest and upright approach (as opposed to 後門|后门, back-door or under the counter)

gate / door / CL:扇[shan4] / gateway / doorway / CL:個|个[ge4] / opening / valve / switch / way to do something / knack / family / house / (religious) sect / school (of thought) / class / category / phylum or division (taxonomy) / classifier for large guns / classifier for lessons, subjects, branches of technology / (suffix) -gate (i.e. scandal; derived from Watergate)

dozen (loanword)

to beat / to strike / to hit / to break / to type / to mix up / to build / to fight / to fetch / to make / to tie up / to issue / to shoot / to calculate / to play (a game) / since / from

tiger / CL:隻|只[zhi1]

back / behind / rear / afterwards / after / later / post-

the back door / fig. under the counter (indirect way for influence or pressure) / anus

wolf / CL:匹[pi3],隻|只[zhi1],條|条[tiao2]