如果有以后可惜没如果
[rú guŏ yŏu yĭ hòu kĕ xī méi rú guŏ]
"If Only There Were A 'What If' In the Future" captures regret tinged with resignation—acknowledging that although we wish we had chances (what-ifs), these possibilities don't actually exist because time moves forward irrevocably.