同声同气 of one mind
Explanation
形容彼此感情好，意见一致。
Describes that two people have a good relationship and share the same opinion.
Origin Story
从前，在一个小山村里，住着两户人家，分别是张家和李家。两家世代友好，关系亲密。张家和李家的小孩从小一起长大，一起玩耍，感情深厚。他们一起上学，一起放学，一起读书，一起写作业，彼此之间总是互相帮助，互相鼓励。长大后，张家和李家的小孩分别考上了大学，一个去了北京，一个去了上海。尽管距离遥远，但是他们依旧保持着密切的联系。他们经常互相写信，互相打电话，分享彼此的生活和学习经验。毕业后，他们又回到家乡，一起创业，一起打拼。他们共同努力，最终创办了一家成功的企业。他们的故事，成为了村里人津津乐道的佳话。他们彼此同声同气，互相扶持，共同创造了美好的生活。
Once upon a time, in a small mountain village, there lived two families, the Zhangs and the Lis. The two families had been friendly for generations and had a close relationship. The children of the two families grew up together, played together, and developed a deep friendship. They went to school together, studied together, and helped each other. Later, they went to different universities, one to Beijing, the other to Shanghai. Despite the great distance, they remained in contact. They wrote letters, telephoned, and shared their experiences with each other. After graduation, they returned to their hometown and started a business. Through their joint efforts and mutual support, they built a successful company. Their story became a legend in the village. They were of one mind and created a happy life together.
Usage
用于形容人与人之间关系亲密，感情深厚，思想一致。
Used to describe that people have a close relationship, understand each other well and share the same views.
Examples
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他们两人同声同气，合作起来非常默契。
tāmen liǎng ge rén tóng shēng tóng qì, hézuò qǐlái fēicháng mòqì zhì tóng dào hé de péngyou, zǒngshì tóng shēng tóng qì
The two of them are of one mind, and they cooperate very well.
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志同道合的朋友，总是同声同气。
Like-minded friends are always of one mind.