There are three thousand weak water, I only take one ladle to drink. ——"A Dream of Red Mansions·Chapter 91"

Explanation: Although gold is expensive, it is easy to get even ten thousand taels; but friendship is more valuable than gold, and it is difficult to find a true close friend.

Knowledge of worldly affairs is knowledge, and understanding of human feelings is writing. ——"A Dream of Red Mansions·Chapter 5"

Explanation: An infatuated man, a sad woman. What is pitiful is that the debt of love is difficult to repay.

Once the spring is gone, the beauties grow old, and the flowers fall and people die without knowing it. ——"A Dream of Red Mansions·Chapter 27"

Explanation: A young lady with a good family background can only spend her miserable and lonely life next to Buddha statues and green lanterns.

Like flowers and beautiful family, like the passing of time - "A Dream of Red Mansions·Chapter 23"

Explanation: In the end, it is still not satisfactory.

Endless lovesickness and blood and tears throw away red beans, endless spring willows and spring flowers fill the painting building, I can’t sleep well after the screen window, wind and rain at dusk, I can’t forget new sorrows and old sorrows. ——"A Dream of Red Mansions·Chapter 28"

Explanation: There are endless drops of blood and tears of lovesickness while throwing away red beans, and the painting building is filled with spring willows and spring flowers, which can never finish blooming. After dusk in the wind and rain, I couldn't sleep well inside the screen window because I couldn't forget the old sorrows plus the new ones.

When the false becomes true, the true is also false, and there is something inaction and nothingness. ——"A Dream of Red Mansions·Chapter 1"

Explanation: What is fake seems to be fake when it is taken as true. Where nothing becomes something, something becomes nothing.