革 · Gé — Timely Transformation
King Wen Sequence #49 (革 Gé — Timely Transformation) embodies forge fire boiling lake water in a crucible. Assigned to the Kan Water Palace (坎宫八卦 · Abysmal Depth) · 四世卦 (World Line 4 / Response Line 1) and resonant with Autumn Equinox Joyous Metal (秋分兑金 · 白露—霜降), its six-line binary vector (101110) pairs 离 Li (Clinging Radiance) at the root with 兑 Dui (Joyous Expression) at the crown.
《大象》：澤中有火，革；君子以治歷明時。 ｜ 《彖传》：革，水火相息，二女同居，其志不相得，曰革。巳日乃孚；革而信也。文明以說，大亨以正，革而當，其悔乃亡。天地革而四時成，湯武革命，順乎天而應乎人，革之時大矣哉！
Visual Archetype: metallurgical furnace casting new bronze. When Lake (Metal) interacts with Fire (Fire), the primary strategic mandate centers on executing a well-timed structural pivot or rebrand. Its Polarity Opposite (Cuo Gua · 错卦) is #4 蒙 (Youthful Cultivation), its Overturned Inverse (Zong Gua · 综卦) is #50 鼎 (The Alchemical Cauldron), and its Nuclear Core (Hu Gua · 互卦) reveals #44 姤 (Unexpected Encounter).
坎宫 · 世爻第4爻 / 应爻第1爻
For decision-makers consulting 革 (Gé) regarding executing a well-timed structural pivot or rebrand, the hexagram highlights the interplay between Fire foundation and Metal manifestation under the Water Palace. Rather than generic haste, align execution with Autumn Equinox Joyous Metal (秋分兑金 · 白露—霜降) rhythms and inspect whether your natal BaZi chart favors Water, Metal, or Fire as its Favorable Element (喜用神).
《京氏易传》世应法：諸侯當世，見元士(京氏易傳原文:諸侯居世4爻,應爻隔三爻)
Six Lines Progression (六爻爻辞 · Bottom Line 1 to Top Line 6)
革 (Gé) Line 1 [初九 · 己卯 (木) · 子孙 (木) · 应爻 Response]: Germination of forge fire boiling lake water in a crucible near metallurgical furnace casting new bronze; validate root premises before accelerating executing a well-timed structural pivot or rebrand. Single-line transformation leads to Zhi Gua #31 咸 (Magnetic Resonance).
《周易本义》：鞏九勇反○雖當革時居初无應未可有為故為此象鞏固也黄中色牛順物革所以固物亦取卦名而義不同也其占為當堅確固守而不可以有為聖人之於變革其謹如此
革 (Gé) Line 2 [六二 · 己丑 (土) · 官鬼 (土)]: Central lower-trigram seat anchored in metallurgical furnace casting new bronze; cultivate Fire craftsmanship in harmony with #44 姤. Single-line transformation leads to Zhi Gua #43 夬 (Resolute Breakthrough).
《周易本义》：六二柔順中正而為文明之主有應於上於是可以革矣然必已日然後革之則征吉而无咎戒占者猶未可遽變也
革 (Gé) Line 3 [九三 · 己亥 (水) · 兄弟 (水)]: Threshold between 离 Li and 兑 Dui during Autumn Equinox Joyous Metal (秋分兑金 · 白露—霜降); pace executing a well-timed structural pivot or rebrand carefully. Single-line transformation leads to Zhi Gua #17 随 (Adaptive Following).
《周易本义》：過剛不中居離之極躁動於革者也故其占有征凶貞厲之戒然其時則當革故至於革言三就則亦有孚而可革也
革 (Gé) Line 4 [九四 · 丁亥 (水) · 兄弟 (水) · 世爻 World]: Ministerial counsel within the Kan Water Palace (坎宫八卦 · Abysmal Depth) · 四世卦; align forge fire boiling lake water in a crucible with institutional mentors. Single-line transformation leads to Zhi Gua #63 既济 (Dynamic Equilibrium Achieved).
《周易本义》：以陽居陰故有悔然卦已過中水火之際乃革之時而剛柔不偏又革之用也是以悔亡然又必有孚然後革乃可獲吉明占者有其徳而當其時又必有信乃悔亡而得吉也
革 (Gé) Line 5 [九五 · 丁酉 (金) · 父母 (金)]: Fulcrum of Timely Transformation (䷰); command executing a well-timed structural pivot or rebrand through balanced Metal and Fire synthesis. Single-line transformation leads to Zhi Gua #55 丰 (Zenith of Abundance).
《周易本义》：虎大人之象變謂希革而毛毨也在大人則自新新民之極順天應人之時也九五以陽剛中正為革之主故有此象占而得此則有此應然亦必自其未占之時人已信其如此乃足以當之耳
革 (Gé) Line 6 [上六 · 丁未 (土) · 官鬼 (土)]: Culmination of forge fire boiling lake water in a crucible, pivoting toward Inverse #50 鼎 (The Alchemical Cauldron) and Opposite #4 蒙. Single-line transformation leads to Zhi Gua #13 同人 (Fellowship with Humanity).
《周易本义》：革道已成君子如豹之變小人亦革面以聴從矣不可以往而居正則吉變革之事非得已者不可以過而上六之才亦不可以有行也故占者如之
BaZi & Plum Blossom Numerology (梅花易数) Connection
Spatial & Elemental Calibration for #49 革: Place a metallurgical furnace casting new bronze motif or Water-element accent in your workspace; cross-reference Hexagram #4 (蒙) when balancing Yin/Yang extremes.
Download Hexagram #49 (革 Gé) 6 Changing Lines Commentary
Get line-by-line classical Yao Ci (爻辞) interpretations from bottom Line 1 (Initial) to top Line 6 (Culmination).