比翼双飞 Fly together with wings
Explanation
比翼：翅膀挨着翅膀。双飞：成双的并飞。比喻夫妻情投意合，在事业上并肩前进。
Biyi: wings touching wings. Shuangfei: a pair of birds flying together. It is a metaphor for a couple who are deeply in love and advance side by side in their careers.
Origin Story
传说中，有一种名为鹣鹣的神鸟，它们翅膀连在一起，只能一起飞翔。一对年轻的夫妇，从小青梅竹马，两情相悦。他们勤奋好学，共同努力考取功名，后来双双进入朝廷为官，成为朝中有名的夫妻官员。他们互相扶持，共同为国家效力，被人们称为“比翼双飞”的典范。这便是比翼双飞的由来。
Legend has it that there is a mythical bird called Jianjian, whose wings are connected together and can only fly together. A young couple, who had been close friends since childhood and were in love with each other, worked hard and passed the civil service examination together. Later, they both became officials at court and became famous officials in the court. They supported each other and served the country together, and were called the model of "flying together with wings". This is the origin of "flying together with wings".
Usage
比翼双飞常用于形容夫妻或情侣恩爱和睦，也用于比喻事业上相互合作，共同进步。
Biyi shuangfei is often used to describe the love and harmony between husband and wife or lovers, but also to metaphorize cooperation and progress together in their careers.
Examples
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一对恋人比翼双飞，羡煞旁人。
yiduilianrenbiyishuangfei, xiansha pangren.
A pair of lovers fly together, envied by others.
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他们比翼双飞，共同创造美好未来。
tamentyishuangfei, gongtongchuangzaomeihaoweilai
They fly together and create a better future together