此地无银三百两

a guilty person conspicuously protests his innocence

cǐ dì wú yín sān bǎi liǎng ㄘㄧˇ ㄉㄧˋ ㄨˊ ㄧㄣˊ ㄙㄢ ㄅㄞˇ ㄌㄧㄤˇ