夏天的爱人叫西瓜西瓜的爱人叫夏天
[xià tiān de ài rén jiào xī guā xī guā de ài rén jiào xià tiān]
In this playful expression, Summer’s lover is Watermelon and Watermelon’s lover is Summer. This phrase reflects fondness for summer days and simple pleasures, connecting the season with the sweet treat commonly enjoyed during that time.