持之有故 well-founded
Explanation
持：坚持，主张；故：原因，根据。指所持的观点或主张有充分的理由和根据。
Hold: maintain, advocate; Reason: reason, basis. Refers to the viewpoint or claim that has sufficient reasons and basis.
Origin Story
战国时期，一位名叫李白的学者，潜心研究兵法多年，终于形成了自己独特的军事理论体系。他的理论并非空想，而是基于对历史战役的深入分析和总结，以及对战争规律的深刻理解。他经常用大量的史料和案例来论证自己的观点，因此他的理论“持之有故”，在当时引起了许多人的关注和赞赏，他的弟子也因此遍布天下。然而，也有少数人对他的理论嗤之以鼻，认为他的观点过于偏激，缺乏实际操作性，甚至有人说他的理论是“纸上谈兵”。面对这些质疑，李白并没有气馁，而是继续潜心研究，并不断改进自己的理论体系，最终使自己的理论体系更加完善。
During the Warring States period, a scholar named Li Bai devoted many years to studying military strategy, finally forming his own unique system of military theory. His theories were not mere fantasies, but were based on in-depth analysis and summary of historical battles, as well as a deep understanding of the laws of war. He often used a large number of historical materials and cases to demonstrate his views, so his theories were "well-founded", which attracted the attention and praise of many people at that time, and his disciples were spread all over the world. However, a few people also scoffed at his theories, believing that his views were too radical and lacked practical operability, and some even said that his theories were "empty talk". In the face of these doubts, Li Bai did not lose heart, but continued to devote himself to research, and constantly improved his theoretical system, which eventually made his theoretical system more perfect.
Usage
用于形容观点、论据、文章等有充分的根据。
Used to describe that viewpoints, arguments, and articles have sufficient basis.
Examples
-
他的观点并非空穴来风，持之有故。
tā de guǎndiǎn bìngfēi kōngxué lái fēng, chí zhī yǒu gù
His point of view is not groundless, it is well-founded.
-
这篇论文论证严谨，持之有故，令人信服。
zhè piān lùnwén lùnzèng yánjǐn, chí zhī yǒu gù, lìng rén xìnfú
This paper is rigorous in its argumentation, well-founded, and convincing.