刨根究底 to get to the bottom of something
Explanation
刨根究底是一个成语，意思是彻底追究事情的根底，弄清事情的真相。它比喻追究底细，也指深入研究。
Páo gēn jiū dǐ is a Chinese idiom that means to thoroughly investigate the root of a matter and find out the truth. It implies a thorough investigation or in-depth study.
Origin Story
小镇上新开了一家古董店，店主人是一位神秘的老者，收藏着各种奇珍异宝。一天，一位年轻的学者慕名而来，对一件青铜器产生了浓厚的兴趣。他翻阅了大量的书籍，查阅了无数的资料，想弄清楚这件青铜器的来历，甚至远赴偏远的乡村，向老人们打听，终于，在一位百岁老人的口中，他了解到了这件青铜器的完整历史，以及它背后不为人知的故事。他为了解开这件青铜器的秘密，可谓是刨根究底，最终完成了他的研究，获得了重要的学术成果。
A mysterious old man opened an antique shop in a small town, filled with rare and precious treasures. One day, a young scholar came, captivated by a bronze artifact. He pored over countless books and documents, traveling to remote villages to interview elders, eventually piecing together the artifact's history and hidden stories from a centenarian. His relentless pursuit—his 'páo gēn jiū dǐ'—yielded important academic achievements.
Usage
刨根究底通常用于形容对事情的调查或研究非常彻底、深入，也常用于比喻追问事情的根底。
Páo gēn jiū dǐ is often used to describe an investigation or study that is very thorough and in-depth, and is also often used to describe the act of questioning the root of something.
Examples
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警方对这起案件刨根究底，终于查出了真相。
jingcha dui zhe qi anjian paogenjiudi, zhongyu cha chu le zhenxiang.
The police investigated the case thoroughly and finally found out the truth.
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为了弄清事情的真相，他刨根究底地追问下去。
weile nuangqing shiqing de zhenxiang, ta paogenjiudi de zhuiwen xiaqu.
In order to find out the truth, he asked questions to get to the bottom of it..