tā / zhǐ / shì / kāi / ge / wán / xiào / nǐ / méi / bì / yào / zhèng / zhòng / qí / shì / de / huí / yìng

她只是开个玩笑，你没必要郑重其事地回应。

She was only joking; you don't need to respond so seriously.