The ancient meaning of the "good match between gold and jade" in "A Dream of Red Mansions" is symbolized by Xue Baochai's "golden lock" and Jia Baoyu's "psychic jade". It is used to refer to the saying that marriage is destined in the previous life. Nowadays, "a good relationship between gold and jade" is used as an idiom. It originally refers to a marriage that conforms to the feudal order. Later, it generally refers to a beautiful marriage.

Source: All Taoism is a good marriage between gold and jade. I only remember the alliance between wood and stone. ? (Chapter 5 of "A Dream of Red Mansions" by Cao Xueqin of the Qing Dynasty) Analysis of allusions.

The leper monk and Cripple Dao had a special liking for Baochai and his "gold and jade marriage", and used this as a specially tailored marriage for Jia Baoyu, which actually symbolized the author's love for Jia Baoyu. After experiencing the ever-changing changes of life, such as hot and cold, there is a psychological tendency to seek spiritual destination from "transcendental" philosophies such as Zen Buddhism and Lao-Zhuang Buddhism.

As for Baochai's mission of guiding Baoyu to "enlighten the Tao" and promote him to become a monk, the leprous monk prescribed "Lengxiang Pills" for Baochai, and the eight characters on the golden lock Prophecy is probably the best explanation.

Extended information:

In Chapter 74, Wang Shanbao’s family said bad things about Qingwen, which prompted Mrs. Wang to say: “Last time we went to the garden with the old lady. There is a man with a water snake waist, slender shoulders, and eyebrows that look a bit like your sister Lin. He is scolding the little girl, and I really despise that crazy look...I hate this the most in my life..."

Later, he didn't care about the rule that "even the cats and dogs in the old lady's house can't hurt him easily", and finally sent Qingwen - the person who was transferred from the old lady's house - out, which led to Qingwen's death. die.

The end of Cao Gong's "A Dream of Red Mansions" has not yet come to an end, but Bao Dai's tragedy is doomed, and the "golden love" that separates the two is actually a song sung by the old sisters Mrs. Wang and Aunt Xue. If there is a good show, they are the real initiators of the "good relationship".

Baidu Encyclopedia-Golden Marriage