It means:

1, check whether there are any obstacles on the wedding road, especially if there are any white things;

2. The man goes to the woman's house to confirm what else will happen on the wedding day, such as getting on the sedan chair, how many people will send the wedding, how many big red envelopes and small red envelopes, and so on. The wedding day was no trouble at all;

If both men and women are particularly familiar, it is going through the motions, playing and drinking.