愚人节表白只是霸道清明节表白才是王道
[yú rén jié biăo bái zhĭ shì bà dào qīng míng jié biăo bái cái shì wáng dào]
Contrasts between two different days (April Fool’s Day and Qingming Festival). It implies that making declarations or professions on April Fool’s might be impetuous and forceful while those during the Tomb Sweeping festival hold deeper sincerity and solemnity because it's time to honor ancestors, thus making it more meaningful in traditional Chinese culture when serious matters should be expressed truly and profoundly.