The eight-character marriage mainly depends on the Japanese column or the zodiac, and the five elements are born together.

The eight-character marriage mainly depends on the Japanese column of the year of birth, that is, the heavenly stems and earthly branches combination. Eight-character marriage is based on the date of birth of both men and women, and the coincidence of their marriage is judged by comparing the heavenly stems and earthly branches relationship of eight characters. The sun column includes the annual column, the moon column, the sun column and the time column, in which the annual column and the moon column represent men and the sun column and the time column represent women. According to the combination of heavenly stems and earthly branches in the eight characters, we can judge the relationship between the two sides, thus evaluating the harmony of marriage. Zodiac will also have a certain impact on the eight-character marriage, because each zodiac corresponds to different attributes of the five elements, and the relationship between the five elements is very important in the eight-character marriage. However, compared with the Japanese column, the zodiac plays a relatively small role in the eight-character marriage. To sum up, the eight-character marriage mainly depends on the heavenly stems and earthly branches combination in the sun column, and the zodiac may have some influence on the marriage outcome, but it is not the decisive factor.