自命不凡 self-important
Explanation
自命不凡是指自认为不平凡，比别人高明。形容骄傲自满，自以为是。
Self-important means to consider oneself extraordinary and superior to others. It describes arrogance and self-importance.
Origin Story
话说唐朝时期，有一位名叫李白的诗人，他从小就才华横溢，诗作更是惊艳世人，名扬天下。他常常自命不凡，认为自己的才华无人能及，不屑与那些庸才为伍。一次，他来到长安参加科举考试，看到许多考生在苦读诗书，认真备考，他却轻蔑一笑，心想：这些人都比不上我，我又何必费心准备呢？结果，他轻敌失利，落榜而归。李白对此很不服气，仍然自命不凡，直到晚年才慢慢认识到自己的错误，开始谦虚谨慎，认真学习。
In the Tang Dynasty, there was a poet named Li Bai. From a young age, he was exceptionally talented and his poems amazed the world, making him famous. He often thought highly of himself, believing that no one could match his talent and disdaining those with ordinary abilities. Once, he went to Chang'an to take the imperial examination. Seeing many candidates diligently studying and preparing, he sneered and thought, “These people are no match for me. Why should I bother preparing?” As a result, he was complacent, failed, and returned home. Li Bai was very unhappy about this, but he still considered himself superior. Only in his old age did he gradually realize his mistakes and begin to be humble and diligent.
Usage
常用来形容人狂妄自大，自以为是，目中无人。
Often used to describe someone who is arrogant, self-satisfied, and conceited.
Examples
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他自命不凡，总认为自己比别人高明。
ta zimingbufan, zong renwei ziji bi bieren gaoming.
He thinks he's better than others.
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虽然年轻，但他自命不凡，常常指点江山。
suiran nianqing, dan ta zimingbufan, changchang zhidian jiangshan.
Although young, he is conceited and often gives orders.