风过无痕雨留声
[fēng guò wú hén yŭ liú shēng]
'Feng Guo Wuheng Yu Liusheng' means 'wind passes by leaving no trace, but rain left echoes'. Symbolically, it expresses things going unnoticed sometimes even when they have significant meanings; or changes happening silently that may be overlooked initially yet still impact our lives.