无凭无据 without proof or evidence
Explanation
指没有任何证据和事实根据。
Means there is no evidence or factual basis.
Origin Story
话说唐朝时期，有个县令特别喜欢听信小道消息，处理案件也全凭感觉，没有证据就乱判人死刑。一次，有人告状说隔壁村的张三偷了李四家的鸡，县令二话不说，就下令抓捕张三。张三被抓后百般辩解，说自己根本没偷鸡，可县令却说："本县令断案从来不用证据，凭感觉就能断案！"张三被冤枉入狱。此事传到京城，皇上大怒，立刻派御史前去调查。御史仔细调查后，发现张三确实冤枉，而县令的判决完全是无凭无据，胡乱猜测。皇上震怒，将县令罢官，并下令以后所有案件都要有真凭实据，才能定案。
During the Tang Dynasty, a county magistrate was known for believing rumors and making judgments based on feelings rather than evidence. One day, someone reported that Zhang San from the neighboring village had stolen Li Si's chicken. The magistrate, without any evidence, ordered Zhang San's arrest. Zhang San pleaded his innocence, but the magistrate said, "I've always judged cases based on my gut feeling, not evidence!" Zhang San was wrongly imprisoned. When the emperor heard about this, he was furious and sent an inspector to investigate. The inspector found that Zhang San was innocent, and the magistrate's judgment was entirely unfounded and based on mere conjecture. The emperor was enraged, dismissed the magistrate, and decreed that all future cases must have solid evidence before a judgment could be made.
Usage
用于形容事情缺乏证据或根据。
Used to describe something lacking evidence or basis.
Examples
-
他的说法完全无凭无据，不足为信。
tā de shuōfǎ wánquán wú píng wú jù, bù zú wèi xìn
His statement is completely unfounded and unreliable.
-
这个计划缺乏实际数据，无凭无据，很难执行。
zhège jìhuà quēfá shíjì shùjù, wú píng wú jù, hěn nán zhìxíng
This plan lacks real data and is ungrounded and hard to implement