老虎嘴中拔牙

beard the lion in his den

lǎo hǔ zuǐ zhōng bá yá ㄌㄠˇ ㄏㄨˇ ㄗㄨㄟˇ ㄓㄨㄥ ㄅㄚˊ ㄧㄚˊ