bàn lù shā chū gè chéng yǎo jīn
lit. Cheng Yaojin ambushes the enemy (saying)
fig. sb shows up unexpectedly and disrupts the plan; sb whose presence is regarded as irksome
半
bàn
half
路
lù
road (CL:條|条[tiao2])
杀
shā
to kill; to slay; to murder; to attack
出
chū
variant of 出[chu1] (classifier for plays or chapters of classical novels)
个
gè
variant of 個|个[ge4]
程
chéng
rule
咬
yǎo
variant of 咬[yao3]
金
jīn
gold