西瓜不该羡慕柠檬的酸柠檬不该羡慕西瓜的甜
[xī guā bù gāi xiàn mù níng méng de suān níng méng bù gāi xiàn mù xī guā de tián]
Watermelons Shouldn't Envy the Sourness of Lemons; Lemons Shouldn't Envy the Sweetness of Watermelons: This conveys the message that one should appreciate their own unique qualities rather than being envious of others' differences, emphasizing contentment and self-worth.