不问洋葱夺人泪故问何必剥它心
[bù wèn yáng cōng duó rén lèi gù wèn hé bì bō tā xīn]
'No Need To Ask For Tears When Cutting An Onion, Why Peel It Then?' uses onion imagery metaphorically; it can be understood as questioning the purpose of stirring up painful memories or unnecessary troubles ('onion' is associated with bringing out emotional pain like tears) when these actions bring no joy but instead only heartache.