What does marriage taboo mean?

"Double date", that is, the month and date are the same. For example, the Spring Festival on 1 month 1 day, the Spring Festival Dragon Boat Festival on February 2nd, the Dragon Boat Festival on March 3rd and May 5th, China Valentine's Day on June 6th and July 7th, and the Double Ninth Festival on September 9th.

Avoid marriage, obviously refers to not getting married and not getting married.

As for whether there are taboos when getting married, is it important? Not necessarily, it depends on the combination of heavenly stems and earthly branches. Moreover, before the Qin and Han Dynasties and before the Qin and Han Dynasties, this kind of "emphasizing the sun" was mostly considered as a day when heaven and earth were sympathetic and connected with each other.