泛滥成灾

fàn làn chéng zāi

lit. to flood (idiom)

fig. rampant; in plague proportions

泛

fàn

(bound form) general

滥

làn

overflowing

成

chéng

short name for Chengdu 成都[Cheng2 du1]

灾

zāi

old variant of 災|灾[zai1]