是非不分 unable to distinguish right from wrong
Explanation
指分辨不清是非，不分好坏。
Unable to distinguish right from wrong.
Origin Story
从前，在一个小山村里住着一位老农，他有两个儿子，大儿子勤劳善良，小儿子好吃懒做。有一天，老农生病了，两个儿子都来照顾他。大儿子细心照料，端茶倒水，无微不至；小儿子却好吃懒做，只顾着自己玩乐。老农病好后，对两个儿子的行为评价却完全相反，他夸赞小儿子活泼好动，说大儿子太死板无趣，是非不分，让村里人都感到很奇怪。其实老农是因为小儿子经常给他带好吃的，所以他偏心。这个故事说明了是非不分的后果，会因为主观偏见而做出错误的判断，影响到自己和他人的生活。
Once upon a time, in a small mountain village, there lived an old farmer who had two sons. The older son was diligent and kind, while the younger son was lazy and gluttonous. One day, the old farmer fell ill, and both sons came to take care of him. The older son nursed him carefully, serving him tea and water, and attending to his every need; the younger son, however, was lazy and only cared about his own amusement. After the old farmer recovered, he praised the younger son for being lively and active and criticized the older son for being too rigid and dull, confounding right and wrong, much to the astonishment of the villagers. The reason was that the younger son often brought him delicious food. This story illustrates the consequences of not distinguishing right from wrong: subjective biases lead to incorrect judgments and affect both one's own life and that of others.
Usage
作谓语、宾语、定语；指分辨不出正确与错误。
Used as predicate, object, or attributive; indicates the inability to distinguish between right and wrong.
Examples
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他是非不分，黑白颠倒。
tashifeibufen,heibaidiandiao.
He can't tell right from wrong, he confuses black and white.
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是非不分，人云亦云。
shifeibufen,renyunyixun.
He can't distinguish right from wrong, and he blindly follows what others say.