2 - 3. Yin Dun and Yang Dun

There are two ways of heavenly Qi's moving, Yin Dun and Yang Dun. Both are concerned with moving of Earth around the sun.

	Yin Dun is a period from summer solstice to next winter solstice. When during the Yin Dun period, Yin energy is born and increasing its power day by day.
	Yang Dun is a period from winter solstice to next summer solstice. During the Yang Dun period, Yang energy is increasing.

This circulation of energy concerned with time can be comprehend as revolution of earth like following:

Ju Shu ( situation numbers ) consists of 1, 2, 3, 4, 5, 6, 7, 8 and 9. It goes descendantly under Yin Dun period, and ascendantly under Yang Dun period like following:

= 9, 8, 7, 6, 5, 4, 3, 2, 1

= 1, 2, 3, 4, 5, 6, 7, 8, 9

2 - 4. General Pattern for Earthly Disk

	Jia-Zi	Jia-Xu	Jia-Shen	Jia-Wu	Jia-Chen	Jia-Yin	Star Wonder	Moon Wonder	Sun Wonder
Liu Yi
Yang Dun	1	2	3	4	5	6	7	8	9
Yin Dun	9	8	7	6	5	4	3	2	1

NOTES: Here the numbers above mean the number in the nine palaces.There are altogether 18 Jus, one Ju every five days.There are nine Yang Dun Jus and nine Yin Dun Jus.

2 - 5. Heavenly Disk
The aboved knowledge talked about the Earthly Disk and how to arrange the Liu Yi and Three Wonders in nine palaces and that is not enough. In ancient China, people held all things have to accept influence from heaven, earth and artificial aspect. Heavenly Disk represents the influence coming from above. There are altogether nine stars, each stands for a different influence, here we call them as Zhi Fu. Please read the following chart:

Eight Trigram
Palace Number	1	2	3	4	5	6	7	8	9
Zhi Fu	Tian Peng	Tian Rui	Tian Cong	Tian Fu	Tian Qin	Tian Xin	Tian Zhu	Tian Ren	Tian Ying

The following gives the explanation as to nine stars:

1. Tian Peng (): water element, corresponding to Kan trigram, has close connection to the appearace of theft. So, it is an inauspicious star. When Tian Peng falls in one palace, people should construct dam, or defence facilities or strengthen the stronghold in order to prevent something happening. It is not good to travel far or do business because the theft may happen.
2. Tian Rui (): earth element, Yin, has close connection with epidemic. So, sometimes we call it as a disease star. When Tian Rui stays in one palace, people should receive teachings or admonishment, make friends, stay in the original place, abstain from arm force deployment, no marriage, no quarrel, no travel far, no new construction, etc.
3. Tian Cong (): wood element, yang, has close connection with kind donation, doing kind deeds, or agricultural activities. It is an auspicious star. When Tian Cong dwells in one palace, it is good for military action, battle or fights. Beside these all is inauspicious.
4. Tian Fu (): wood element, yang, has close connection with cultrual education. It is a very ausoicious star. Whe Tian Fu dwells in one palace, it is auspicious for travel, business, marriage, construction, especially study progress, social status ascendence and culture and education development.
5. Tian Qin (): earth element, yang, auspicious for all things because it dwells in the central earth palace which can gives rise to all.
6. Tian Xin (): metal element, yin, has close connection with leadership capability, scheming, desease treatment and military deployment. t is an auspicious star.
7. Tian Zhu (): metal element, yin, has close connection with killings, strange things, mysterious matters, damage. It is an inauspicious star. When Tian Zhu falls in one palace, people should strengthen their garrison, train their forces, prepare for the bad. It is not good for travel far, do business, otherwise loss, injury, unfortunate things will happen.
8. Tian Ren (): earth element, yang, an auspicious star. When Tian Ren dwells in one palace, it is good for offering teaching to general people, pacificate people, crack down upon insurgence or mobsters. Also good for business, marriage, social status.
9. Tian Ying (): fire element, yin, has close connection with outragous behavior, heated situation, fire and blood. It is a neutral star. When Tian Ying dwells in one palace it is good for planing, dropping a visit to high officials, but it is bad if people want fortune, social status possession, marriage or travel.

2 - 6. Human Disk
Human disk means the eight Gates which summarize all possible influence from human beings.

Num.	Gate	Direction	Summary
8	(birth)	northeast	To generate energy for action of the day. It is an agent of Gen-Trigram, and also represents Chou-branch and Yin-branch. Generally speaking, This gate is useful for any purpose, especially for health.
3	(injury)	east	To be injured or scratch something easily by mistake, because of hurry to the work or remainder of yesterday's tiredness. It is an agent of Zhen-Trigram, and also represents Mao-Branch. This gate is useful for hospitalization with operations.
4	(clumsy)	southeast	Start working of the day, but not smoothly done for complete. It is an agent of Sun-Trigram, and also represents Chen-branch and Si-branch. This gate is not useful for any purposes. This gate is only useful for running away, or arresting robbers.
9	(prospect)	south	The most active time in a day. It is an agent of Li, and also represents Wu-branch. This gate is useful for any purposes.
5, 2	(slacken)	southwest	Sleepy for satisfaction from eating. It is an agent of Kun-Trigram, and also represents Wei-branch and Shen-branch. This gate should not be used except burial.
7	(surprise)	west	It's nearly the time to finish the work. As concentrations get declined, people are easily surprised at unexpected happenings. It is an agent of Dui-Trigram, and also represents You-branch. This gate is not useful for any purposes.
6	(relax)	northwest	Return home after work of the day. It's time to go to bed. It is an agent of Chain-Trigram, and also represents Xu-branch and Hai-branch. This gate is useful for any purposes. Kai denotes all things are prosperous, metal elements,
1	(rest)	north	People are in sleep. It is an agent of Kan-Trigram, and also represents Zi-branch. This gate is useful for any purposes.

2 - 7. Guard Disk
There are altogether 8 Guards used in Dunjia, which summarize the possible influence from mysterious aspect or celestial powers. We call them Zhi Shi . In Yang Dun Ju the eight Guards will line up in the following sequance::

The eight Guards will line up in the following sequence in Yin Dun Ju:

1. Zhi Fu (): earth element, central position, the commander of all other Guards. When it falls in one palace, all evil things will flee without any trace.
2. Teng She (): fire element, south, hypocratic and crafty Guard. Stands for hypocratic characters, acrimony speech. Responsible for strange, hypocratic and dreadful things.
3. Tai Yin (): metal element, west, the sheltering Guard. Of obscure and invisible attributes. Where Tai Yin comes upon it is suitable for planning, scheming, plotting, etc. and for taking shelter and hide the military forces.
4. Liu He (): wood element, east, the protection Guard. Its character is unclouded and amiable. Where it falls upon it is suitable for marriage arrangement, discussing business, negotiation, etc.
5. Bai Hu (): metal element, west, atrocious Guard. Apt to killing in most of situation, Responsible for arm forces deployment, killings, epidemics, traffic accidents. Under it there hids Gou Chen.
6. Xuan Wu ():water element, north, crafty sycophant or thief. Prefer to stealing and clandestine love affairs. Responsible for thieft, going into exile, quarrel. Under it there hides the Zhu Que.
7. Jiu Di (): earth element, central position, the common mother of all things. Its charater is tame, quiet, pliable. Where it comes upon it is suitable for planting, dwelling, stationing arm forces.
8. Jiu Tian (): metal element, positioned high up as like the heaven. Valiant Guard. Very strong character and prefer to taking action. Where it comes upon it is suitable for deploying arm forces, battle, travel.