Why can't the bride and groom meet the day before the wedding?

In ancient times, a matchmaker said that the two sides didn't know what the other side looked like at all, and they couldn't see each other until they got married. Although this is not the case now, why can't men and women who want to get married meet, and it has evolved into the day before marriage? It turns out that the elders think that both lovers are happy, and meeting each other may cause a phenomenon of liking each other, so for the safety of the wedding day, both sides can't meet the day before the wedding. In both cases, the wedding is chosen according to the auspicious time. If the couple meet more often than the children the day before, even on the wedding day, it will ruin the auspicious time originally scheduled for the wedding day. So there is a saying that you can't meet the day before your wedding. To put it simply, I was busy on the first day of marriage and didn't have time to meet.