上下同心 United as one
Explanation
指上下一心，团结一致。形容齐心协力，共同努力。
refers to the unity and cooperation from top to bottom. It describes the joint effort and cooperation of all participants.
Origin Story
很久以前，在一个偏远的小山村里，住着一户人家。家里的老老少少，虽然各有各的性格，但他们都有一颗团结的心。村里要修建一条水渠，需要大家的齐心协力。村长号召大家一起参与，可是很多人因为种种原因都推三阻四的。而这户人家，老爷爷老奶奶带头，儿子儿媳和孙子孙女们也都积极参与。他们分工合作，有的负责挖土，有的负责运送石块，有的负责整理沟渠。大家干得热火朝天，互相鼓励，互相帮助。在他们的带动下，村里的其他人也纷纷加入进来。最终，水渠顺利完工，全村人都从中受益。而这户人家，也因为他们的上下同心，成为了村里人学习的榜样。
Long ago, in a remote mountain village, there lived a family. Although each member of the family had their own personality, they all shared a united heart. The village was planning to build an irrigation canal, which required everyone's concerted effort. The village head called on everyone to participate, but many hesitated for various reasons. However, this family, with the grandparents leading the way, actively participated. They divided the work: some dug, others transported stones, and others cleaned the canal. They worked diligently, encouraging and helping each other. Inspired by them, the other villagers also joined in. Finally, the canal was completed, and the entire village benefited from it. This family became a model for the village because of their united will.
Usage
形容团结一致，共同努力。
describes unity and cooperation.
Examples
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上下同心，其利断金。
shang xia tong xin, qi li duan jin
When everyone works together, success is guaranteed.
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一家老小，上下同心，共同努力，终于战胜了困难。
yi jia lao xiao, shang xia tong xin, gong tong nuli, zhong yu zhan sheng le kun nan
The whole family worked together and finally overcame their difficulties.