[破釜沉舟, pò fǔ chén zhōuㄆㄛˋ ㄈㄨˇ ㄔㄣˊ ㄓㄡ] lit. to break the cauldrons and sink the boats (成语 saw); fig. to cut off one's means of retreat; to burn one's boats#46417
[沉湎酒色, chén miǎn jiǔ sèㄔㄣˊ ㄇㄧㄢˇ ㄐㄧㄡˇ ㄙㄜˋ] to wallow in alcohol and sex (成语 saw); over-indulgence in wine and women; an incorrigible drunkard and lecher
[鱼沉雁杳 / 魚沉雁杳, yú chén yàn yǎoㄩˊ ㄔㄣˊ ㄧㄢˋ ㄧㄠˇ] lit. the fish sinks, the goose vanishes into the distance (成语 saw); a letter does not arrive; lost in transmission