How to learn to choose dates, such as weddings and cooperation?

Basic: According to the 3rd, 6th, 9th, 13, 16, 19, 23rd, 26th and 29th of each month in the summer calendar.

Intermediate: find a perpetual calendar or find a perpetual calendar website on the computer.

Advanced: Learning the Eight Diagrams of Zhouyi

In the wedding, we should leave a meaningful memorial for the couple, and we can make a wedding collection for the couple. At the wedding, the newlyweds, parents, relatives and friends put some mysterious gifts and commemorative wine together in the wedding collection, so as not to let the newlyweds see the specific contents, and the newlyweds sealed them themselves until the next eight designated wedding anniversaries, which is very meaningful and beautiful.