柠檬是酸的甜的是海棠
[níng méng shì suān de tián de shì hăi táng]
It contrasts sourness (like a lemon) with sweetness (referring to hawthorn). It symbolizes a balance of emotions, recognizing bitter moments while finding sweetness and resilience elsewhere in life. The use of fruits to depict emotions reflects how different experiences shape one's feelings.