10.运过胜己畏齐化, 不及乘衰胜己兼. 太过被克不及助, 皆为正化
是平年. 气寅午未酉戌亥. 正司化令有余看. 子丑卯辰巳申岁. 对司
化令不足言.
【注】五运之中运, 统主一年之运也. 中运太过则旺, 胜己者则畏其
盛,反齐其化矣. 如太宫土运, 反齐木化; 太角木运, 反齐金化；太
商金运, 反齐火化; 太征火运, 反齐水化; 太羽水运反齐土化也. 即
经所谓畏其旺, 反同其化, 薄其所不胜也. 中运不及则弱, 胜己者,
则乘其衰, 来兼其化矣. 如少宫土运, 木来兼化; 少角木运, 金来兼
化;少商金运, 火来兼化; 少征火运, 水来兼化; 少羽水运, 土来兼
化;即经所谓乘其弱, 来同其化, 所不胜薄之也. 中运戊辰阳年. 火
运太过, 遇寒水司天, 则为太过被制; 中运乙卯阴年, 金运不及, 遇
燥金司天, 则为同气; 中运辛卯阴年, 水运不及, 则为相生; 俱为不
及得助. 凡遇此类, 皆为正化平和之年也. 气者, 六气之客气, 统一
岁之司化之气也. 如厥阴司巳亥, 以厥阴属木, 木生于亥, 故正化于
亥,对化于巳也. 少阴司子午, 以少阴为君火, 当正南离位, 故正化
于午, 对化于子也. 太阴司丑未, 以太阴属土居中, 王于西南未宫 ,
故正, 化于未, 对化于丑也. 少阳司寅申, 以少阳属相火, 位卑于君
火,火生于寅, 故正化于寅, 对化于申也. 阳明司卯酉, 以阳明属金
,酉为西方金位, 故正化于酉, 对化于卯也. 太阳司辰戌, 以太阳为
水,辰戌属土, 然水行土中, 而戌居西北, 属水渐王之乡, 是以洪范
五行, 以戌属水, 故正化于戌, 对化于辰也. 是以寅, 午, 未, 酉 ,
戌,亥为正化, 正化者, 令之实, 主有余也. 子, 丑, 卯, 辰, 巳 ,
申为对化. 对化者, 令之虚, 主不足也 ( 图十四、 十五 ).
10. 当五运太过时，克制它的五行会畏惧其盛势而与其化气相同，称为“齐化”；当五运不及之时，克制它的五行会乘其虚弱而兼取其化气，称为“兼化”。若中运太过而被司天之气所克制，或中运不及而得到同气或相生之气的帮助，这些情况都属于“正化”，是平和之年。六气中，寅、午、未、酉、戌、亥年为正化之年，此时司天之令有余；子、丑、卯、辰、巳、申年为对化之年，此时司天之令不足。
【注】在五运之中，“中运”统管一年的运气。中运太过则旺盛，原本克制它的五行（胜己者）会畏惧其强盛，反而与其化气相同（即“齐化”）。例如：太宫土运太过，反而齐同木的化气；太角木运太过，反而齐同金的化气；太商金运太过，反而齐同火的化气；太征火运太过，反而齐同水的化气；太羽水运太过，反而齐同土的化气。这就是《内经》所说的“畏其旺，反同其化，薄其所不胜也”（畏惧其旺盛，反而与其相同，侵迫其所不胜的五行）。中运不及则虚弱，原本克制它的五行（胜己者）会乘其衰弱而来兼取其化气（即“兼化”）。例如：少宫土运不及，木来兼化；少角木运不及，金来兼化；少商金运不及，火来兼化；少征火运不及，水来兼化；少羽水运不及，土来兼化。这就是《内经》所说的“乘其弱，来同其化，所不胜薄之也”（乘其虚弱，前来与其相同，其所不胜之气侵迫它）。当中运为戊辰阳年时，火运太过，如果遇到寒水司天，则为“太过被制”；当中运为乙卯阴年时，金运不及，如果遇到燥金司天，则为“同气”相助；当中运为辛卯阴年时，水运不及，则为“相生”相助。凡是遇到这类情况，都属于因不及而得助，是正化且平和之年。“气”指的是六气中的客气，统管一年司天在泉的化气。例如：厥阴风木司天于巳亥年，因为厥阴属木，木生于亥，所以正化在亥，对化在巳。少阴君火司天于子午年，因为少阴为君火，正当南方离位，所以正化在午，对化在子。太阴湿土司天于丑未年，因为太阴属土居中，旺于西南未宫，所以正化在未，对化在丑。少阳相火司天于寅申年，因为少阳属相火，地位低于君火，火生于寅，所以正化在寅，对化在申。阳明燥金司天于卯酉年，因为阳明属金，酉为西方金位，所以正化在酉，对化在卯。太阳寒水司天于辰戌年，因为太阳为水，辰戌属土，但水行于土中，且戌居西北，是水气渐旺之乡，是以《洪范五行》以戌属水，所以正化在戌，对化在辰。因此，寅、午、未、酉、戌、亥为正化之年，正化者，代表时令充实，主有余；子、丑、卯、辰、巳、申为对化之年，对化者，代表时令虚衰，主不足。（见图十四、十五）。
10. When the Five Movements (Wu Yun) are excessive, the element that controls it fears its prosperity and aligns with its transformation, known as "Qi Hua" (Alignment Transformation). When the Five Movements are deficient, the controlling element takes advantage of its weakness to incorporate its transformation, known as "Jian Hua" (Concomitant Transformation). If an excessive Central Movement is restrained by the Si Tian (Heavenly Qi), or if a deficient Central Movement receives assistance from the same element or a generating element, these are all considered "Zheng Hua" (Orthodox Transformation), representing years of balance and peace. Among the Six Qi, the years of Yin, Wu, Wei, You, Xu, and Hai are Zheng Hua years, where the ruling Qi is abundant; the years of Zi, Chou, Mao, Chen, Si, and Shen are Dui Hua (Counter Transformation) years, where the ruling Qi is insufficient.
[Annotation] Among the Five Movements, the "Central Movement" (Zhong Yun) governs the movement of the entire year. When the Central Movement is excessive, it becomes prosperous. The element that normally controls it (Sheng Ji Zhe) fears its strength and instead aligns with its transformation (Qi Hua). For example: In Tai Gong Earth Movement (excessive Earth), it aligns with Wood's transformation; in Tai Jiao Wood Movement (excessive Wood), it aligns with Metal's transformation; in Tai Shang Metal Movement (excessive Metal), it aligns with Fire's transformation; in Tai Zheng Fire Movement (excessive Fire), it aligns with Water's transformation; in Tai Yu Water Movement (excessive Water), it aligns with Earth's transformation. This corresponds to the classic saying: "Fearing its prosperity, it reverses to share its transformation, encroaching upon what it cannot overcome." When the Central Movement is deficient, it becomes weak. The controlling element takes advantage of its decline to incorporate its transformation (Jian Hua). For example: In Shao Gong Earth Movement (deficient Earth), Wood incorporates its transformation; in Shao Jiao Wood Movement (deficient Wood), Metal incorporates its transformation; in Shao Shang Metal Movement (deficient Metal), Fire incorporates its transformation; in Shao Zheng Fire Movement (deficient Fire), Water incorporates its transformation; in Shao Yu Water Movement (deficient Water), Earth incorporates its transformation. This corresponds to the classic saying: "Taking advantage of its weakness, it comes to share its transformation, as what cannot overcome it encroaches upon it." When the Central Movement is Wu Chen (Yang Year), Fire Movement is excessive. If Cold Water rules the Heaven (Si Tian), it is "Excess being restrained." When the Central Movement is Yi Mao (Yin Year), Metal Movement is deficient. If Dry Metal rules the Heaven, it is "Same Qi" assistance. When the Central Movement is Xin Mao (Yin Year), Water Movement is deficient, which is "Generating" assistance. All such cases represent deficiency receiving assistance, constituting Orthodox Transformation and peaceful years. "Qi" refers to the Ke Qi (Guest Qi) of the Six Qi, governing the ruling transformation of the year. For instance: Jue Yin (Wind-Wood) rules in Si and Hai years. Since Jue Yin belongs to Wood, and Wood is born in Hai, the Zheng Hua is in Hai, and the Dui Hua is in Si. Shao Yin (Minister-Fire) rules in Zi and Wu years. Since Shao Yin is Minister Fire, occupying the South Li position, the Zheng Hua is in Wu, and the Dui Hua is in Zi. Tai Yin (Damp-Earth) rules in Chou and Wei years. Since Tai Yin belongs to Earth, centered and prosperous in the Southwest Wei palace, the Zheng Hua is in Wei, and the Dui Hua is in Chou. Shao Yang (Minister-Fire) rules in Yin and Shen years. Since Shao Yang is Minister Fire, subordinate to Minister Fire, and Fire is born in Yin, the Zheng Hua is in Yin, and the Dui Hua is in Shen. Yang Ming (Dry-Metal) rules in Mao and You years. Since Yang Ming belongs to Metal, and You is the Western Metal position, the Zheng Hua is in You, and the Dui Hua is in Mao. Tai Yang (Cold-Water) rules in Chen and Xu years. Since Tai Yang is Water, and Chen/Xu belong to Earth, yet Water moves within Earth, and Xu is located in the Northwest, a region where Water qi gradually prospers, according to the Hong Fan Five Elements, Xu is attributed to Water. Thus, the Zheng Hua is in Xu, and the Dui Hua is in Chen. Therefore, Yin, Wu, Wei, You, Xu, and Hai are Zheng Hua years. Zheng Hua implies substantial timing and predominance of excess. Zi, Chou, Mao, Chen, Si, and Shen are Dui Hua years. Dui Hua implies empty timing and predominance of deficiency. (See Figures 14 and 15).