耀武扬威 show off military strength; swagger
Explanation
炫耀武力，显示威风。形容得意忘形，傲慢自大。
To show off one's military strength and power. It describes someone who is self-satisfied and arrogant.
Origin Story
话说三国时期，蜀汉名将关羽，水淹七军，威震华夏。曹魏方面，大将于禁被俘，庞德战死，曹操损失惨重。关羽乘胜追击，攻破樊城，威名远扬。然而，关羽的骄傲自满也随之而来。他每日里耀武扬威，在百姓面前炫耀武力，甚至不把曹操放在眼里。一时间，关羽的军队四处劫掠，百姓苦不堪言。然而，这却埋下了他日后败亡的伏笔。东吴方面，吕蒙早已看穿了关羽的骄横，他巧妙地利用了关羽的轻敌冒进，发动了袭击。关羽最终兵败身亡，也为后世留下了耀武扬威的下场。
During the Three Kingdoms period, Guan Yu, a renowned general of Shu Han, flooded seven armies, striking fear into the hearts of China. On the Cao Wei side, General Yu Jin was captured and Pang De was killed, resulting in heavy losses for Cao Cao. Guan Yu pursued his victory, capturing Fancheng, spreading his fame far and wide. However, Guan Yu's arrogance grew along with his success. He would daily show off his military might, boasting before the people, even showing contempt for Cao Cao. For a time, Guan Yu's army plundered everywhere, causing great suffering to the people. But this laid the groundwork for his eventual demise. Lü Meng of Wu had long recognized Guan Yu's arrogance, and he cunningly used Guan Yu's underestimation and overconfidence to launch an attack. Guan Yu was finally defeated and killed, leaving behind a cautionary tale about the perils of showing off one's power.
Usage
形容得意忘形，傲慢自大。
Describes self-satisfied, arrogant people.
Examples
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他总是耀武扬威，令人讨厌。
ta zong shi yao wu yang wei, ling ren tao yan.
He is always showing off, which is annoying.
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军队耀武扬威地通过了广场。
jun dui yao wu yang wei de tong guo le guang chang
The army marched triumphantly through the square..