In ancient times, people paid special attention to auspicious days. How was the so-called auspicious day chosen?

Good days and auspicious days are chosen according to the rotation of the sun and the moon, combined with the five elements of yin and yang, namely, Jin Mu, water, fire, soil, twelve satellites and twenty-eight nights. The ancients in China thought that the stars in the sky and people on the earth were corresponding.

Twelve satellites: construction, removal, filling, cooling, breakthrough and shutdown. Its good or ill luck song is:

Build an apartment and collect black,

In addition to danger, we will definitely implement the Yellow River.

Can be used for opening and closing,

It is unlucky to close the door.

Among the twelve satellites, the five days of division, determination, implementation, success and opening are auspicious days of the zodiac, suitable for weddings and other festive days. Besides, you must choose 28 good or bad nights. Twenty-eight lodgings are: Dong: Jiaomujiao, Kang Jinlong, Shitu, Fangri Rabbit, Fox, Tail Firefox and Jishui Leopard.

South: Muan Jing, Ghost Golden Sheep, Liu Shizhen, Xingma, Zhang Yuelu, Fei Huo Snake and Lumbricus.

West: Kuimu Wolf, Loujin Dog, Stomach Pheasant, Chicken, Bi, Gunshot Monkey.

North: unicorns, Taurus, ladies' paintings, rising sun rats, dangerous moon swallows, room fire pigs and wall water pheasants.

Among these 28 homestays, there are 14 stars: Jiaomujiao, Fangri Rabbit, Tail Fire Tiger, Jishui Leopard, Kirin, Night Fire Pig, Bishuiqi, Loujin Dog, Stomach Pheasant, Bi, Fang Ri Rabbit, Zhang Yuelu and Lumbricus. The other fourteen stars are unlucky. In other words, a lucky day must be twelve satellites and twenty-eight nights. After this day is chosen, you can't rush to get old, you can't break the moon, and you can't rush to hurt yourself. The so-called breakthrough is that the earth branch is separated by six places. Such as Woods Chong, Ugly Buchong, Shen Yinchong, You Mao Chong, Chen Xuchong and Hayes Chong. Let's take an example: August 20th17,21is Ding Younian, Wushen and Chen Geng Day. The twelve constellations are the sunrise, and the twenty-eight constellations are the Bi Yue, which are two auspicious stars. Chen Tian and Shen Yue are half-surnames, and their surname is Ji. Don't break this year's old age. As long as the person who chooses the date is not a dog, rabbits can use it. If the birthday meets the full moon, that is, the full moon of the broken year, then this day can't be used, so you have to choose again. Sometimes it takes months to choose an auspicious day.