Play a number on an auspicious day.
The auspicious day of the zodiac refers to a good day in the lunar calendar, which is suitable for dealing with all kinds of auspicious events, such as marriage, moving, opening a business and offering sacrifices. Among them, the six stars, Qinglong, Tang Ming, Jingui, Tiande, Yutang and Siming, are auspicious gods, called Six Zodiac Day; The six states of elimination, danger, determination, persistence, success and opening are auspicious days, which are called "Little Yellow Road Days".
If a day is both a six-ecliptic day and a small ecliptic day, it is called a big ecliptic day, and everything is appropriate and not avoided. If a day is neither six ecliptic days nor little ecliptic days, it is called a bad day and everything should be avoided.
Therefore, there are two possible answers to the question: one is to number the six auspicious gods and six auspicious days or their sum, that is, "6" or "12"; The other is to play numbers according to the homophonic sound of auspicious words and numbers, that is, "7". The former is more direct and the latter is more flexible. It depends on the intention and requirements of the topic.
The source of auspicious day:
There are different opinions about the origin of auspicious days. One view is that the auspicious day of the ecliptic was divided by ancient astronomers according to the orbit of the sun in the sky, that is, the ecliptic. There are twelve constellations on the ecliptic, each of which corresponds to a god. Some are auspicious and some are fierce.
When you meet six auspicious gods such as Qinglong, Tang Ming, Jingui, Tiande, Yutang and Siming on duty, it is auspicious and everything goes well; When the six evil spirits, such as White Tiger, Natural Punishment, Suzaku, Tianlong, Xuanwu and Gouchen, are on duty, it is a fierce day in the underworld, and everything is unfavorable.
Another way of saying this is that the auspicious day of the ecliptic was formulated by ancient historians according to the rotation of twelve satellites. The twelve duty days are construction, division, filling, leveling, determination, execution, breaking, danger, success, closing, opening and closing. All the days corresponding to the words elimination, danger, determination, persistence, success and openness are auspicious days; The days corresponding to the words "build, full, flat, broken, closed and closed" are sinister days in the underworld.