[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
[炼丹八卦炉 / 煉丹八卦爐, liàn dān bā guà lúㄌㄧㄢˋ ㄉㄢ ㄅㄚ ㄍㄨㄚˋ ㄌㄨˊ] eight trigrams furnace to cook pills of immortality; symbol of the alchemist's art; Double, double toil and trouble; Fire burn, and cauldron bubble