缺了柠檬的夏天不是夏天少了西瓜的夏天不是夏天
[quē le níng méng de xià tiān bù shì xià tiān shăo le xī guā de xià tiān bù shì xià tiān]
Literally translates to: 'A summer without lemon is not summer; a summer without watermelon is not summer.' It signifies essential ingredients for perfect summer experiences, emphasizing the indispensable joy of summer treats.