Wasan tseren kwalekwale wata muhimmiyar al'ada ce ta bikin Duanwu. Akwai wata tatsuniya game da dalilin da ya sa ake wannan wasa a yayin bikin Duanwa, wadda ta nuna cewa, bayan da Qu Yuan ya tsunduma cikin kogi, al'ummar daular Chu sun yi bakin ciki kwarai, wasu ma sun je har tafkin Dongting da kwalekwale don su ceto shi, amma, kokarinsu ya bi ruwa. Daga nan, a kan shirya wasan tseren kwalekwale a kowace ranar 5 ga watan Mayu bisa kalandar gargajiyar kasar Sin domin tunawa da marigayin. Ana ganin tseren da ake yi zai taimaka wajen korar kifayen da ke cikin kogin domin kada su cinye gawar Qu Yuan. Lubabatu, ko ba haka ba.