微雨江南玉扣染青尘
[wēi yŭ jiāng nán yù kòu răn qīng chén]
The phrase evokes a poetic scene from traditional Chinese landscapes - a light rain over Jiangnan (a beautiful region south of the lower reaches of the Yangtze River), where jade buttons are stained by green dust. It suggests nostalgia and beauty in subtlety and simplicity.