十年没有一首歌那么短
[shí nián méi yŏu yī shŏu gē nèi me duăn]
It translates as 'ten years are not as short as one song'. This is usually said when recalling the past decade; although it seems long (ten years), sometimes people feel those moments slip by in an instant (like the duration of a single song) due to rich experiences packed within those times.