What's the difference between choosing an auspicious day for marriage and watching Feng Shui, that is, holding a wedding or getting a license?

It is a folk tradition of China people to choose auspicious days.

Marriage registration (engagement) and wedding ceremony are important events in the life of both husband and wife, so it is best to choose an auspicious day.

If you want to choose, you should choose an auspicious day based on the traditional wedding banquet and wine setting etiquette, because China tradition has always regarded this day as a real wedding day.