脱缰野马

tuō jiāng yě mǎ

a wild horse that refuses to be bridled (a metaphor for sth that runs wild)

脱

tuō

to shed

缰

jiāng

bridle

野

yě

field

马

mǎ

abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]