过关斩将

guò guān zhǎn jiàng

to surmount all difficulties (on the way to success) (idiom) (abbr. for 過五關斬六將|过五关斩六将[guo4 wu3 guan1 zhan3 liu4 jiang4])

guò

to cross

guān

mountain pass

zhǎn

to behead (as form of capital punishment)

jiàng

(bound form) a general