There are ten hidden rules in wedding couplets. Who can explain?

The ancients in Yiyang thought that there was a difference between heaven and earth. Every winter to the beginning of the day, the yin exhausted and the yang recovered, which was called the recovery of one yang. "The first movement of the sun" refers to the time of marriage, that is to say, the date of the wedding is shortly after the winter of solstice. Confusion in the Book of Rites describes the second surname: "Those who are confused by the ceremony must be consistent with the second surname", and "the second surname is Xie Ke", which means "marry with the second surname" and "marry with Qin Jin". Sanduo, formerly known as "Many blessings, many longevity and many men", compiled a book called Zhuangzi Heaven and Earth. "Sanduo" is used here, which has a new meaning, that is, blessing and wish. These four beautiful words are Xie Lingyun's Eight Poems to Be Received by Prince Zhong: "Beauty, beauty, joy and joy in the world are hard to match." The "four beauties" here refer to the time when they got married, their personality hobbies, the support of their relatives and friends, the grand wedding and the warm atmosphere, all of which reached the best state. There are four meanings: beauty, beauty, joy and joy. During the Spring and Autumn Period, Chen Guo's son went to Qi State, and Zhong Yi, the doctor of Qi State, wanted to marry his daughter. His wife is regarded as "lucky", and there is a sentence of "prosperity in the fifth world" in Oracle Bone Inscriptions, so the marriage is settled. The use of "Qi Chang in the Five Dynasties" in this couplet is actually a kind of congratulations, indicating that their marriage is happy. Six Rites was published with Ten Weddings in Yi Li. Six gifts refer to the six procedures that an old marriage must go through from beginning to end, namely, receiving gifts (proposing marriage), asking names (knowing each other's situation), Naji (getting engaged), receiving gifts (bride price), clearing up the period (telling the wedding date) and welcoming (getting married). The "six rites have been accomplished" used in this pair of wedding couplets means that they have done all the preparations before marriage very well, so the marriage is going smoothly. Seven sages published Wei Chunqiu. Refers to Ji Kang, Ruan Ji, Dan Tao, Xiang Embroidery, Ruan Xian, Wang Rong and Liu Ling in the Wei and Jin Dynasties. These seven people "swam in the bamboo forest, numbered as the seven sages". The "gathering of seven sages" in this couplet means that all relatives and friends of both men and women are present on the wedding day. Eight tones This is the general name of ancient musical instruments, which refers to eight musical instruments, namely, gold, stone, earth, leather, silk, wood, bamboo and musical instruments. The "playing eight tones" used in this couplet is a description and summary of the lively scene of marriage. The poem "Xiaoya Nature Conservation" in Jiuru Temple says: "Mountains are like hills, hills are like tombs, and the land is like rivers, so it will increase ... like the moon, like the rising sun, like the life of Nanshan, like pines and cypresses, and it will never fail." The "Song Jiuru" used in this pair of couplets means that life is longer than Nanshan and everything is complete. Shiquandian published Zhou Li Tianguan Doctor. "Perfect" means perfect, perfect. The "perfection" used in this couplet means that the marriage is smooth and perfect in all aspects.