前言不搭后语 incoherent
Explanation
形容说话前后连接不上，语无伦次，多指思想混乱，不能自圆其说。
Describes a way of speaking where the sentences are not logically connected, creating a disjointed impression. It often indicates confusion or a lack of clarity in thinking.
Origin Story
话说唐朝时期，有个秀才去参加科举考试，他自认为才华横溢，满怀信心，准备大展身手。然而，到了考场上，他却紧张得不行，脑袋一片空白。他拿起笔，想写下自己精心准备的策论，却发现自己前言不搭后语，写出来的文章毫无逻辑，前言后语完全不相干，像一锅粥一样，让人看不懂。他试着调整思路，但越想越乱，越写越糟糕。最终，他交上了一篇杂乱无章的考卷，自然是落榜了。这次失败的经历，让他深刻体会到，只有认真准备，才能应对挑战，而临场慌乱只会让自己前言不搭后语，一事无成。从此以后，他更加努力学习，认真思考，终于在下次考试中取得了优异的成绩，实现了自己的梦想。
It is said that during the Tang Dynasty, a scholar took a civil service examination. He believed in his extraordinary abilities and was full of confidence. However, on the examination field, he was overwhelmed by nervousness and his head was blank. He picked up his pen and wanted to write his carefully prepared essay, but he found that his words were incoherent. The essay lacked logic, the beginning and end did not match, it was like porridge, incomprehensible. He tried to adjust his thinking, but the more he thought, the more confused he became, and the worse his writing became. In the end, he submitted a disorganized examination paper, which naturally resulted in failure. This experience taught him that only careful preparation can overcome challenges, while nervousness only leads to incoherent speech. From that time on, he studied even harder and thought more carefully, until he achieved excellent results in the next examination and realized his dream.
Usage
用于形容说话前后不连贯，语无伦次。
Used to describe someone speaking incoherently and without connection.
Examples
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他说话前言不搭后语，让人难以理解。
tā shuō huà qiányán bù dā hòuyǔ, ràng rén nán yǐ lǐjiě。
His words were incoherent and difficult to understand.
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这场辩论会，选手发言前言不搭后语，令人失望。
zhè chǎng biànlùn huì, xuǎnshǒu fāyán qiányán bù dā hòuyǔ, lìng rén shīwàng。
The debate was disappointing as the contestants spoke incoherently and without any connection.