mutual exchange of needed products
In Chinese, the Pinyin is y ǒ UW ú Xi ā NGT ō ng, which means to communicate with each other. From the epitaph of Liu Dingbo.
The origin of Idioms
In the epitaph of Liu Dingbo written by Wen Tianxiang of Song Dynasty, it is said that "friends have something to do with each other. I am in a hurry to go."
Idiom usage
The Han people will live in harmony with us forever! Lao She's frog rider Scene 3
mutual exchange of needed products
It's too fast to cover your ears - xùn léi bù jí yǎn ěr
Cast the new and wash out the old - zhù xīn táo jiù