思念是距离的不堪
[sī niàn shì jù lí de bù kān]
Translated loosely as 'Longing is the Intolerable Distance.' This implies that sometimes missing loved ones intensifies feelings especially when distances physically separate them. Such pain associated due to geographical barriers can often feel unbearable leading to heartache and melancholy, thus the user picks such nicknames to express the sentiment of unendurable longing due to physical separation.