夫司天者司之言直也司直而侍于天之直也左右者从直也次于司天也即从司而侍直于天其名间气即本气随天虚而时间
令化也是司天之间化之令故名曰间气故与天相得者或与天不相得者或与天令并化者或胜天令而不化者或先于天令或后于
天令或来间早或来间晚或来早而去早或来晚而去晚或来早而去晚或来晚而去早或惧天令而不来或左应而右不应或右应而
左不应或左右俱应或左右俱不应或从南正或从北正如此即天令非一故虽预定亦以细穷之定纪天令必化不化故述于后夫天
元六气者即是厥阴少阴太阴少阳阳明太阳即厥阴为巳亥之纪少阴为子午之纪太阴为丑未之纪少阳为寅申之纪阳明为卯酉
之纪太阳为辰戌之纪此者是阴阳轮流定纪之数故终而复始也
厥阴为木其令为风其性暄其德和其忧摧拉其胜折陨其复飘怒其化三八其虫毛其脏肝其病掉眩筋拳其色青其味酸其臭
臊其养筋其候目其应春其星岁星其动左胁其象青龙其脉弦长其卦震其位寅卯其谷苍其果李其畜鸡其眚陨落其灾三宫其神
魂其液泣其司巳亥运合丁壬
少阴为君火其令热其性温其德慈其变郁蒸其胜大暄其复郁燠其化二七其虫羽其脏心其病惊悸其色赤其味苦其臭焦其
养脉其候舌其应夏其星炅煌似火星赤而小其动当心其象朱雀其脉洪大其卦离其位巳午其谷丹其果杏其畜羊其眚烦热其灾
九宫其神呻其液汗其司子午运合戊癸不主运气君火以名不统五运也
太阴为土其令雨其性润其德缓其变埃昏其胜霖霪其复霏 其化五其虫 其脏脾其病痞噫黄胆其色黄其味甘其臭香其
养肉其候唇其应长夏其星镇星其动当脐其象句陈其脉缓其卦坤其位辰戌丑未其谷 其果枣其畜牛其眚 昧其灾五宫其神
噫智其液涎其司丑未运合甲己
少阳为相火其令暑其性炎其德猛烈其变沸腾其胜烁石其复流金其化二七其虫翮其脏包胳其病狂癫其色赤其味苦其臭
焦其养血其候舌其应夏其星荧惑其动手心劳宫其象朱雀其脉钩其卦离其位巳午其谷丹其果杏其畜羊其眚燔KT 其灾九宫
其神 其液汗其司寅申运合戊癸
阳明为金其令燥其性凉其德 其变肃杀其胜凋零其复 陨其化四九其虫介甲其脏肺其病喘咳鼽嚏其色白其味辛其臭
腥其养皮毛其候鼻其应秋其星太白其动右胁其象白虎其脉毛其卦兑其位申酉其谷素其果桃其畜马其眚霜露其灾七宫其神
魄其液涕其司卯酉运合乙庚
太阳为水其令寒其性凉其德凛其变凛冽其胜 霏其复冰雹其化一六其虫鳞其脏肾其病委厥其色黑其味咸其臭腐其养
骨其候耳其应冬其星辰星其动脐下其象玄武其脉石其卦坎其位亥子其谷玄其果栗其畜彘其眚霜雪其灾一宫其神精志其液
唾其司辰戌运合丙辛
厥阴所以司于巳亥者何也谓厥阴木也木生于亥故正司于亥也对化于巳也虽有卯为正位木之分谓阳明金对化之所以从
所生而顺于司也
少阴所以司于子午者何也谓少阴为君火君火尊位所以正得南方离位也即正化于午对化于子也
太阴所以司于丑未者何也谓太阴为土也土主中宫寄卦于坤坤位西南居未分也即正化于未对化于丑也
少阳所以司于寅申者何也谓少阳为相火之位卑于君火也虽有午位君火以居之即火生于寅也故正司于寅对化于申也
阳明所以司于卯酉者何也谓阳明为金酉为西方金位即正司于酉对化于卯也
太阳所以司于辰戌者何也谓太阳为水水虽有于子位谓君火对化也水乃复于土中即六戊在天门即戌是也六巳在地户即
辰是也故水归土用正司于戌对化于辰也
凡化之令风木为何化三八火热为何化二七土雨为何化五燥金为何化四九寒水为何化一六此谓五行之数也各有生成之
数也即水一火二木三金四土五也此皆五行之生数也其有成数者何也即于本数上各加五是也即水六火七木八金九土十是也
土所以无成数者谓土王四季不得正方也又数至十而到行即复归五也天有九宫不可至十也至九而回也
又生成正化以何明之从其本而生从其标而成也以何为标以何为本也正化为本对化为标即厥阴正化于亥风化三本也故
生数对司于巳风化八标也故成数少阴正司午热化二本也故生数对司于子热化七标也故成数太阴正司于未对司于丑皆雨化
五土无成数也故只生数少阳正司于寅火化二本也故生数对司于申火化七标也故成数阳明正司于酉燥化四本也故生数对司
于卯燥化九标也故成数太阳正司于戌寒化一本也故生数对司于辰寒化六标也故成数皆以本从生数标从成数正司令化之实
对司令化之虚也
凡左右者从司也间气也假令厥阴司天左少阴右太阳也少阴司天左太阴右厥阴也太阴司天左少阳右少阴也少阳司天左
阳明右太阴也阳明司天左太阳右少阳也太阳司天左厥阴右阳明也即以前为左后为右也若北正司天即以左在西右在东也若
南正司天即以左在东右在西也凡木火金水运皆北正司天只土运南正司天也
凡司直之令皆以在泉及运共主一岁也唯左右间气不然也即左主三气是初二三也是木君火相火分也此三气应左是也右
主三气是四五终也是土金水分也此三气应右也凡间气有至有不至者何也假令少阳相火司天即左见阳明阳明金也金避火而
不至也其相火对化天虚或见水运乃可小至尔除此不至也余即皆至也凡少阴司天即左见太阴也即左主初二三也即太阴土惧
初木气故至而晚也何故也后入二之气木气退于位始至也故来晚也今举此法余皆 之也
又左间气主先右间气主后也皆与司天相得即至也先后有法于后述若间气胜于天即至也天胜于间气间气不至也其至有
时也亦取正对化之法即左间气随阳遁于局中取法并与天相得遇直符而至也以何见之尔假令子年少阴司天即左见太阴太阴
即土也即土主五宫也实时甲子入五宫即至也又假令丑年太阴司天即左见少阳相火也火主九宫实时甲子轮丑入于离宫即少
阳相火至也今举此二法即余皆 之审详而用
司天之气,所谓“司”,意为主持、正直;“司直”即主持正气并侍奉于天的正道。左右间气则是顺从司天之正位,次于司天而侍奉天道。这种随天虚而间隔出现的气,称为“间气”,即本气随着天时虚位而间歇性地发挥作用。因为它是司天所主之令的化生,所以叫作间气。因此,它与天道的关系有:相得(和谐)、不相得(冲突)、与天令共同化生、胜过天令而不化生、先于天令到来、后于天令到来、来得早去得早、来得晚去得晚、来得早去得晚、来得晚去得早、畏惧天令而不来、左间气应验右间气不应验、右间气应验左间气不应验、左右皆应验、左右皆不应验、顺应南正向或顺应北正向等情况。正因为天令并非单一固定,所以虽然预先制定,也必须细致穷究其规律。确定纪年天令是否化生,故在后方叙述。
天元六气,即是厥阴、少阴、太阴、少阳、阳明、太阳。其中,厥阴对应巳年和亥年的纪运,少阴对应子年和午年的纪运,太阴对应丑年和未年的纪运,少阳对应寅年和申年的纪运,阳明对应卯年和酉年的纪运,太阳对应辰年和戌年的纪运。这是阴阳轮流确定的纪运之数,所以循环往复,终而复始。
厥阴属木,其令为风,其性温暖,其德柔和,其忧表现为摧折拉断,其胜表现为折断陨落,其复表现为飘动愤怒,其化数为三八(24),其虫为毛虫(兽类),其脏为肝,其病为震颤眩晕、筋脉拘挛,其色为青,其味为酸,其臭为臊,其养筋,其候为目,其应季节为春,其星为岁星,其动应在左胁,其象为青龙,其脉为弦长,其卦为震,其方位为寅卯,其谷为苍色谷物,其果为李,其畜为鸡,其灾眚为陨落,其灾害宫位为三宫,其神为魂,其液为泪,其司管巳亥年,运气配合丁壬年。
少阴属君火,其令为热,其性温,其德慈爱,其变为郁蒸,其胜为大暑热,其复为郁热闷湿,其化数为二七(14),其虫为羽虫(鸟类),其脏为心,其病为惊悸,其色为赤,其味为苦,其臭为焦,其养脉,其候为舌,其应季节为夏,其星为荧惑星(似火星,赤色而小),其动应在当心,其象为朱雀,其脉为洪大,其卦为离,其方位为巳午,其谷为丹色谷物,其果为杏,其畜为羊,其灾眚为烦热,其灾害宫位为九宫,其神为呻(呻吟之声,此处指心神不安之象,原文作“呻”,通常解为心志之变,或指声音),其液为汗,其司管子午年,运气配合戊癸年。少阴君火以名位尊,不统摄五运。
太阴属土,其令为雨,其性润,其德缓和,其变为埃昏,其胜为霖雨连绵,其复为霏微细雨,其化数为五,其虫为倮虫(人类等无毛羽鳞介者),其脏为脾,其病为痞满、噫气、黄疸,其色为黄,其味为甘,其臭为香,其养肉,其候为唇,其应季节为长夏,其星为镇星(土星),其动应在脐部,其象为句陈(北斗七星之一,亦指中央土象),其脉为缓,其卦为坤,其方位为辰戌丑未,其谷为黄色谷物,其果为枣,其畜为牛,其灾眚为昏暗不明,其灾害宫位为五宫,其神为意智,其液为涎,其司管丑未年,运气配合甲己年。
少阳属相火,其令为暑,其性炎上,其德猛烈,其变为沸腾,其胜为烁石流金,其复为流金灼热,其化数为二七(14),其虫为翮虫(有翅膀的昆虫或鸟类),其脏为心包络,其病为狂癫,其色为赤,其味为苦,其臭为焦,其养血,其候为舌,其应季节为夏,其星为荧惑,其动手心劳宫穴,其象为朱雀,其脉为钩,其卦为离,其方位为巳午,其谷为丹色谷物,其果为杏,其畜为羊,其灾眚为焚烧烤灼,其灾害宫位为九宫,其神为喜乐(原文缺字,据理推测),其液为汗,其司管寅申年,运气配合戊癸年。
阳明属金,其令为燥,其性凉,其德肃降(原文缺字,据义补),其变为肃杀,其胜为凋零,其复为陨落,其化数为四九(36),其虫为介甲虫(带壳昆虫),其脏为肺,其病为喘咳、鼻塞喷嚏,其色为白,其味为辛,其臭为腥,其养皮毛,其候为鼻,其应季节为秋,其星为太白,其动应在右胁,其象为白虎,其脉为毛(浮涩),其卦为兑,其方位为申酉,其谷为白色谷物,其果为桃,其畜为马,其灾眚为霜露,其灾害宫位为七宫,其神为魄,其液为涕,其司管卯酉年,运气配合乙庚年。
太阳属水,其令为寒,其性凉,其德凛冽,其变为凛冽寒冷,其胜为霏微雨雪,其复为冰雹,其化数为一六(6),其虫为鳞虫(鱼类等),其脏为肾,其病为痿厥,其色为黑,其味为咸,其臭为腐,其养骨,其候为耳,其应季节为冬,其星为辰星(水星),其动应在脐下,其象为玄武,其脉为石(沉),其卦为坎,其方位为亥子,其谷为黑色谷物,其果为栗,其畜为猪,其灾眚为霜雪,其灾害宫位为一宫,其神为精志,其液为唾,其司管辰戌年,运气配合丙辛年。
为什么厥阴主管巳亥年呢?因为厥阴属木,木生于亥,所以正司于亥年;对化于巳年。虽然有卯为正位,是木的分野,但因为阳明金是对化之位,所以遵循“从所生而顺于司”的原则。
为什么少阴主管子午年呢?因为少阴为君火,君火地位尊贵,所以正得南方离位,即正化于午年,对化于子年。
为什么太阴主管丑未年呢?因为太阴属土,土主中宫,寄卦于坤,坤位西南,居未之分野,所以正化于未年,对化于丑年。
为什么少阳主管寅申年呢?因为少阳为相火,地位低于君火。虽然有午位,但被君火占据,且火生于寅,所以正司于寅年,对化于申年。
为什么阳明主管卯酉年呢?因为阳明属金,酉为西方金位,所以正司于酉年,对化于卯年。
为什么太阳主管辰戌年呢?因为太阳属水。水虽然在子位,但与君火对化。水乃复归于土中,六戊在天门即戌位,六巳在地户即辰位,所以水归土用,正司于戌年,对化于辰年。
凡是化生的令数:风木为何化为三八?火热为何化为二七?土雨为何化为五?燥金为何化为四九?寒水为何化为一六?这叫做五行之数,各有生成之数。即水一、火二、木三、金四、土五,这些都是五行之生数。那有成数的是什么呢?就是在本数上各加五,即水六、火七、木八、金九、土十。为什么土没有成数?因为土旺于四季,不得正方。又因为数至十而行尽,即复归于五。天有九宫,不可至十,至九而回环。
又生成正化如何说明?从其本而生,从其标而成。什么是标?什么是本?正化为本,对化为标。即厥阴正化于亥,风化三为本,故生数;对司于巳,风化八为标,故成数。少阴正司于午,热化二为本,故生数;对司于子,热化七为标,故成数。太阴正司于未,对司于丑,皆雨化五,土无成数,故只取生数。少阳正司于寅,火化二为本,故生数;对司于申,火化七为标,故成数。阳明正司于酉,燥化四为本,故生数;对司于卯,燥化九为标,故成数。太阳正司于戌,寒化一为本,故生数;对司于辰,寒化六为标,故成数。都是以本从生数,标从成数,正司令化之实,对司令化之虚。
凡是左右间气,都顺从司天之气。例如厥阴司天,左间气为少阴,右间气为太阳;少阴司天,左间气为太阴,右间气为厥阴;太阴司天,左间气为少阳,右间气为少阴;少阳司天,左间气为阳明,右间气为太阴;阳明司天,左间气为太阳,右间气为少阳;太阳司天,左间气为厥阴,右间气为阳明。即以前为左,以后为右。若以北正向司天,则以左在西,右在东;若以南正向司天,则以左在东,右在西。凡木、火、金、水运皆以北正向司天,只有土运以南正向司天。
凡是司天之正令,都以在泉之气及大运共同主宰一岁。唯独左右间气不是这样。即左间气主前三气(初之气、二之气、三之气),这是木、君火、相火分管,这三气应验于左间气;右间气主后三气(四之气、五之气、终之气),这是土、金、水分管,这三气应验于右间气。凡是间气有至与不至的情况,为什么呢?例如少阳相火司天,左间气见阳明,阳明属金,金避火而不至。其相火对化,天虚,或者遇到水运,才可以稍微至。除此之外的不至情况,其余皆至。凡是少阴司天,左间气见太阴,左间气主初二三之气,太阴属土,畏惧初之气木气,所以至而晚。为什么呢?因为后入二之气,木气退位才始至,所以来得晚。现在举此法为例,其余皆可类推。
另外,左间气主先,右间气主后。都与司天相得,就会至。先后有法则,在后面叙述。如果间气胜于天,就会至;天胜于间气,间气就不至。其至也有时候,也取正对化的法则。即左间气随阳遁于局中,取法并与天相得,遇直符而至。如何验证呢?例如子年,少阴司天,左间气见太阴,太阴属土,土主五宫,实时甲子入五宫,即至。又例如丑年,太阴司天,左间气见少阳相火,火主九宫,实时甲子轮丑入于离宫,即少阳相火至。现在举这两个例子,其余皆可类推,审详而用。
The Si Tian (Heavenly Ruler) Qi, the term "Si" implies presiding and uprightness; "Si Zhi" means presiding over upright Qi and attending to the Heavenly Dao. The Left and Right Jian Qi (Intermittent Qi) follow the upright position of the Si Tian, subordinate to it, and attend to the Heavenly Way. This Qi that appears intermittently according to the voids of Heaven is called "Jian Qi," meaning the intrinsic Qi acts intermittently as Heaven's temporal voids arise. Because it is the transformation commanded by the Si Tian, it is named Jian Qi. Thus, its relationship with the Heavenly Dao includes: Xiang De (harmony), Bu Xiang De (conflict), Bing Hua (co-transformation), Sheng Tian Ling Er Bu Hua (overcoming the Heavenly Command without transforming), Xian Yu Tian Ling (arriving before the Heavenly Command), Hou Yu Tian Ling (arriving after the Heavenly Command), Lai Zao Qu Zao (early arrival and early departure), Lai Wan Qu Wan (late arrival and late departure), Lai Zao Qu Wan (early arrival and late departure), Lai Wan Qu Zao (late arrival and early departure), Ju Tian Ling Er Bu Lai (fearing the Heavenly Command and not arriving), Zuo Ying You Bu Ying (Left responds but Right does not), You Ying Zuo Bu Ying (Right responds but Left does not), Zuo You Ju Ying (both respond), Zuo You Ju Bu Ying (neither responds), Cong Nan Zheng (following the Southern Upright), or Cong Bei Zheng (following the Northern Upright). Since the Heavenly Commands are not uniform, although predetermined, one must meticulously investigate them. To determine whether the Ji Nian (Year Cycle) Heavenly Commands transform or not, they are described below.
The Six Qi of Tian Yuan are Jue Yin, Shao Yin, Tai Yin, Shao Yang, Yang Ming, and Tai Yang. Jue Yin corresponds to the cycles of Si and Hai years; Shao Yin to Zi and Wu years; Tai Yin to Chou and Wei years; Shao Yang to Yin and Shen years; Yang Ming to Mao and You years; Tai Yang to Chen and Xu years. This is the number of cycles determined by the rotation of Yin and Yang, thus ending and beginning again in a loop.
Jue Yin belongs to Wood. Its command is Wind; its nature is warm; its virtue is harmony; its sorrow manifests as breaking and tearing; its excess manifests as snapping and falling; its reversal manifests as turbulent anger; its transformation number is 3x8=24; its insects are Hairy Ones (mammals); its zang organ is the Liver; its disease involves tremors, vertigo, and tendon cramping; its color is Green; its taste is Sour; its odor is Fishy; it nourishes tendons; its sensory organ is the Eye; it corresponds to Spring; its star is Suixing (Jupiter); its movement affects the Left Hypochondrium; its image is the Azure Dragon; its pulse is Wiry and long; its trigram is Zhen; its direction is Yin-Mao; its grain is Greenish; its fruit is Plum; its animal is Chicken; its disaster is falling; its disaster palace is Palace 3; its spirit is Hun; its fluid is Tears; it governs Si-Hai years; its Yun (Five Movements) combines with Ding-Ren years.
Shao Yin belongs to Sovereign Fire. Its command is Heat; its nature is warm; its virtue is benevolence; its change is oppressive steaming; its excess is severe heat; its reversal is stifling heat; its transformation number is 2x7=14; its insects are Feathered Ones (birds); its zang organ is the Heart; its disease involves fright and palpitations; its color is Red; its taste is Bitter; its odor is Scorched; it nourishes vessels; its sensory organ is the Tongue; it corresponds to Summer; its star is Huoxing (Mars, red and small); its movement affects the Center of the Chest; its image is the Vermilion Bird; its pulse is Surging and large; its trigram is Li; its direction is Si-Wu; its grain is Reddish; its fruit is Apricot; its animal is Sheep; its disaster is vexatious heat; its disaster palace is Palace 9; its spirit is Shen (groaning/distress); its fluid is Sweat; it governs Zi-Wu years; its Yun combines with Wu-Gui years. Shao Yin Sovereign Fire holds a prestigious name and does not dominate the Five Movements.
Tai Yin belongs to Earth. Its command is Rain; its nature is moist; its virtue is slackness/calmness; its change is dusty haze; its excess is continuous heavy rain; its reversal is drizzle; its transformation number is 5; its insects are Naked Ones (humans); its zang organ is the Spleen; its disease involves fullness, belching, and jaundice; its color is Yellow; its taste is Sweet; its odor is Fragrant; it nourishes flesh; its sensory organ is the Lips; it corresponds to Late Summer; its star is Zhensxing (Saturn); its movement affects the Umbilicus; its image is Gouchen (Central Earth symbol); its pulse is Slow; its trigram is Kun; its direction is Chen-Xu-Chou-Wei; its grain is Yellowish; its fruit is Date; its animal is Ox; its disaster is dimness/obscurity; its disaster palace is Palace 5; its spirit is Yi (thought/intellect); its fluid is Saliva; it governs Chou-Wei years; its Yun combines with Jia-Ji years.
Shao Yang belongs to Minister Fire. Its command is Hot Weather; its nature is flaming; its virtue is fierce; its change is boiling; its excess is melting stone; its reversal is flowing metal; its transformation number is 2x7=14; its insects are Winged Ones; its zang organ is the Pericardium; its disease involves mania and epilepsy; its color is Red; its taste is Bitter; its odor is Scorched; it nourishes Blood; its sensory organ is the Tongue; it corresponds to Summer; its star is Huoxing (Mars); its movement affects the Laogong acupoint on the palm; its image is the Vermilion Bird; its pulse is Hook-like; its trigram is Li; its direction is Si-Wu; its grain is Reddish; its fruit is Apricot; its animal is Sheep; its disaster is burning/scorching; its disaster palace is Palace 9; its spirit is Xi (joy); its fluid is Sweat; it governs Yin-Shen years; its Yun combines with Wu-Gui years.
Yang Ming belongs to Metal. Its command is Dryness; its nature is cool; its virtue is肃降 (descending/clearing); its change is austere killing; its excess is withering; its reversal is falling; its transformation number is 4x9=36; its insects are Armored Ones (shelled insects); its zang organ is the Lung; its disease involves wheezing, coughing, nasal congestion, and sneezing; its color is White; its taste is Pungent; its odor is Fishy; it nourishes skin and hair; its sensory organ is the Nose; it corresponds to Autumn; its star is Taibai (Venus); its movement affects the Right Hypochondrium; its image is the White Tiger; its pulse is Hair-like (floating/rough); its trigram is Dui; its direction is Shen-You; its grain is Whitish; its fruit is Peach; its animal is Horse; its disaster is frost and dew; its disaster palace is Palace 7; its spirit is Po; its fluid is Nasal Mucus; it governs Mao-You years; its Yun combines with Yi-Geng years.
Tai Yang belongs to Water. Its command is Cold; its nature is cool; its virtue is chilling; its change is biting cold; its excess is fine snow/rain; its reversal is hail; its transformation number is 1x6=6; its insects are Scaled Ones (fish/reptiles); its zang organ is the Kidney; its disease involves flaccidity and cold limbs; its color is Black; its taste is Salty; its odor is Putrid; it nourishes bones; its sensory organ is the Ear; it corresponds to Winter; its star is Chenxing (Mercury); its movement affects the lower abdomen; its image is the Black Tortoise; its pulse is Stone-like (deep); its trigram is Kan; its direction is Hai-Zi; its grain is Blackish; its fruit is Chestnut; its animal is Pig; its disaster is frost and snow; its disaster palace is Palace 1; its spirit is Jingzhi (essence/will); its fluid is Spittle; it governs Chen-Xu years; its Yun combines with Bing-Xin years.
Why does Jue Yin govern Si-Hai years? Because Jue Yin is Wood, and Wood is born in Hai, so it primarily governs Hai; it counter-governs Si. Although Mao is the proper position for Wood, because Yangming Metal is the counter-governor, it follows the principle of "following the birth place and complying with governance."
Why does Shao Yin govern Zi-Wu years? Because Shao Yin is Sovereign Fire. Due to its high status, it correctly occupies the Southern Li position, primarily governing Wu and counter-governing Zi.
Why does Tai Yin govern Chou-Wei years? Because Tai Yin is Earth. Earth governs the Central Palace and is associated with the Kun trigram. Kun is located in the Southwest, corresponding to Wei. Thus, it primarily governs Wei and counter-governs Chou.
Why does Shao Yang govern Yin-Shen years? Because Shao Yang is Minister Fire, which is subordinate to Sovereign Fire. Although Wu is the position of Fire, it is occupied by Sovereign Fire. Since Fire is born in Yin, it primarily governs Yin and counter-governs Shen.
Why does Yang Ming govern Mao-You years? Because Yang Ming is Metal, and You is the Western Metal position. Thus, it primarily governs You and counter-governs Mao.
Why does Tai Yang govern Chen-Xu years? Because Tai Yang is Water. Although Water is at Zi, it counter-governs with Sovereign Fire. Water returns to Earth. Liu Wu (Six Wus) is at the Heavenly Gate, which is Xu; Liu Si (Six Sis) is at the Earthly Door, which is Chen. Therefore, Water returns to Earth use, primarily governing Xu and counter-governing Chen.
Regarding the transformation numbers: Why is Wind/Wood 3x8? Why is Heat/Fire 2x7? Why is Rain/Earth 5? Why is Dryness/Metal 4x9? Why is Cold/Water 1x6? These are the Numbers of the Five Elements, each having Generation and Completion numbers. The Generation numbers are Water 1, Fire 2, Wood 3, Metal 4, Earth 5. The Completion numbers are obtained by adding 5 to the generation numbers: Water 6, Fire 7, Wood 8, Metal 9, Earth 10. Why does Earth have no completion number? Because Earth prospers in the four seasons and does not occupy a single cardinal direction. Also, when the number reaches ten, the cycle restarts from five. There are nine palaces in Heaven, so it cannot reach ten; it returns at nine.
How are Generation, Completion, Primary, and Counter transformations explained? They arise from the Root (Ben) and complete via the Branch (Biao). Primary transformation is the Root; Counter transformation is the Branch. Jue Yin primarily transforms at Hai (Wind 3, Root/Generation number); it counter-transforms at Si (Wind 8, Branch/Completion number). Shao Yin primarily transforms at Wu (Heat 2, Root); it counter-transforms at Zi (Heat 7, Branch). Tai Yin primarily transforms at Wei and counter-transforms at Chou (Rain 5); Earth has no completion number, so only the generation number applies. Shao Yang primarily transforms at Yin (Fire 2, Root); it counter-transforms at Shen (Fire 7, Branch). Yang Ming primarily transforms at You (Dryness 4, Root); it counter-transforms at Mao (Dryness 9, Branch). Tai Yang primarily transforms at Xu (Cold 1, Root); it counter-transforms at Chen (Cold 6, Branch). Thus, the Root follows the Generation number, and the Branch follows the Completion number. The Primary command represents the substance of transformation, while the Counter command represents the emptiness/virtual aspect.
The Left and Right Jian Qi follow the Si Tian. For example, if Jue Yin is Si Tian, the Left is Shao Yin and the Right is Tai Yang. If Shao Yin is Si Tian, the Left is Tai Yin and the Right is Jue Yin. If Tai Yin is Si Tian, the Left is Shao Yang and the Right is Shao Yin. If Shao Yang is Si Tian, the Left is Yang Ming and the Right is Tai Yin. If Yang Ming is Si Tian, the Left is Tai Yang and the Right is Shao Yang. If Tai Yang is Si Tian, the Left is Jue Yin and the Right is Yang Ming. Here, "front" is Left and "back" is Right. If governed by the Northern Upright, Left is West and Right is East. If governed by the Southern Upright, Left is East and Right is West. Generally, Wood, Fire, Metal, and Water Yun govern via the Northern Upright, while only Earth Yun governs via the Southern Upright.
The Si Tian command, along with the Zai Quan (In Earth) and Da Yun (Great Movement), jointly governs the year. The Left and Right Jian Qi do not function this way. The Left Jian Qi governs the first three Qi periods (Initial, Second, Third), corresponding to Wood, Sovereign Fire, and Minister Fire. The Right Jian Qi governs the last three Qi periods (Fourth, Fifth, Final), corresponding to Earth, Metal, and Water.
When do Jian Qi arrive or not arrive? For instance, if Shao Yang (Minister Fire) is Si Tian, the Left Jian Qi sees Yang Ming (Metal). Metal avoids Fire, so it does not arrive. However, if the Minister Fire counter-transforms due to a heavenly void, or if a Water Yun occurs, it may slightly arrive. Otherwise, it does not arrive. All others arrive. If Shao Yin is Si Tian, the Left Jian Qi sees Tai Yin (Earth). Tai Yin fears the Initial Wood Qi, so it arrives late. Why? Because it enters the Second Qi period only after the Wood Qi retreats, hence the late arrival. This method applies to all other cases.
The Left Jian Qi governs earlier, and the Right Jian Qi governs later. They arrive if they are in harmony with Si Tian. The sequence has rules described later. If Jian Qi overcomes Si Tian, it arrives; if Si Tian overcomes Jian Qi, it does not arrive. The timing also follows the Primary/Counter transformation rules. The Left Jian Qi follows the Yang遁 (Yang escape) pattern within the bureau, harmonizing with Heaven and arriving with the Zhi Fu (Direct Deity). How to verify? For example, in a Zi year, Shao Yin is Si Tian. The Left Jian Qi is Tai Yin (Earth), which governs Palace 5. When Jia Zi enters Palace 5, it arrives. In a Chou year, Tai Yin is Si Tian. The Left Jian Qi is Shao Yang (Minister Fire), which governs Palace 9. When Jia Zi rotates to Chou and enters the Li Palace, Shao Yang arrives. These two examples illustrate how to apply this to all other cases carefully.