Chengyu — O 4 idioms

• 藕断丝连藕斷絲連 ǒu duàn sī lián ㄡˇ ㄉㄨㄢˋ ㄙ ㄌㄧㄢˊ ngau5 dyun6 si1 lin4 lit. lotus roots may break, but the fiber remains joined (idiom); lovers part, but still long for one another +
• 呕心沥血嘔心瀝血 ǒu xīn lì xuè ㄡˇ ㄒㄧㄣ ㄌㄧˋ ㄒㄩㄝˋ au2 sam1 lik6 hyut3 lit. to spit out one's heart and spill blood (idiom); to work one's heart out; blood, sweat and tears +
• 偶一为之偶一為之 ǒu yī wéi zhī ㄡˇ ㄧ ㄨㄟˊ ㄓ ngau5 jat1 wai4 zi1 to do sth once in a while (idiom); to do sth more as an exception than the rule +
• 偶语弃市偶語棄市 ǒu yǔ qì shì ㄡˇ ㄩˇ ㄑㄧˋ ㄕˋ ngau5 jyu5 hei3 si5 chance remarks can lead to public execution (idiom) +