大壮 · Dà Zhuàng — Righteous Vigor
King Wen Sequence #34 (大壮 Dà Zhuàng — Righteous Vigor) embodies thunder roaring high in the firmament of heaven. Assigned to the Kun Earth Palace (坤宫八卦 · Receptive Treasury) · 四世卦 (World Line 4 / Response Line 1) and resonant with Spring Equinox & Awakening Thunder (春分震木 · 惊蛰—谷雨), its six-line binary vector (111100) pairs 乾 Qian (Creative Sovereignty) at the root with 震 Zhen (Awakening Initiative) at the crown.
《大象》：雷在天上，大壯；君子以非禮勿履。 ｜ 《彖传》：大壯，大者壯也。剛以動，故壯。大壯利貞；大者正也。正大而天地之情可見矣！
Visual Archetype: bronze chariot on a broad highway. When Thunder (Wood) interacts with Heaven (Metal), the primary strategic mandate centers on channeling peak organizational power with ethical restraint. Its Polarity Opposite (Cuo Gua · 错卦) is #20 观 (Clear Contemplation), its Overturned Inverse (Zong Gua · 综卦) is #33 遯 (Timely Strategic Retreat), and its Nuclear Core (Hu Gua · 互卦) reveals #43 夬 (Resolute Breakthrough).
坤宫 · 世爻第4爻 / 应爻第1爻
For decision-makers consulting 大壮 (Dà Zhuàng) regarding channeling peak organizational power with ethical restraint, the hexagram highlights the interplay between Metal foundation and Wood manifestation under the Earth Palace. Rather than generic haste, align execution with Spring Equinox & Awakening Thunder (春分震木 · 惊蛰—谷雨) rhythms and inspect whether your natal BaZi chart favors Earth, Wood, or Metal as its Favorable Element (喜用神).
《京氏易传》世应法：九四諸侯立世，初九元士在應(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)
大壮 (Dà Zhuàng) Line 1 [初九 · 甲子 (水) · 妻财 (水) · 应爻 Response]: Germination of thunder roaring high in the firmament of heaven near bronze chariot on a broad highway; validate root premises before accelerating channeling peak organizational power with ethical restraint. Single-line transformation leads to Zhi Gua #32 恒 (Persevering Constancy).
《周易本义》：趾在下而進動之物也剛陽處下而當壮時壮于進者也故有此象居下而壮于進其凶必矣故其占又如此
大壮 (Dà Zhuàng) Line 2 [九二 · 甲寅 (木) · 官鬼 (木)]: Central lower-trigram seat anchored in bronze chariot on a broad highway; cultivate Metal craftsmanship in harmony with #43 夬. Single-line transformation leads to Zhi Gua #55 丰 (Zenith of Abundance).
《周易本义》：以陽居隂已不得其正矣然所處得中則猶可因以不失其正故戒占者使因中以求正然後可以得吉也
大壮 (Dà Zhuàng) Line 3 [九三 · 甲辰 (土) · 兄弟 (土)]: Threshold between 乾 Qian and 震 Zhen during Spring Equinox & Awakening Thunder (春分震木 · 惊蛰—谷雨); pace channeling peak organizational power with ethical restraint carefully. Single-line transformation leads to Zhi Gua #54 归妹 (Aligning Role & Timing).
《周易本义》：羝音低羸力追反○過剛不中當壮之時是小人用壮而君子則用罔也罔无也視有如无君子之過於勇者也如此則雖正亦危矣羝羊剛壮喜觸之物藩籬也羸困也貞厲之占其象如此
大壮 (Dà Zhuàng) Line 4 [九四 · 庚午 (火) · 父母 (火) · 世爻 World]: Ministerial counsel within the Kun Earth Palace (坤宫八卦 · Receptive Treasury) · 四世卦; align thunder roaring high in the firmament of heaven with institutional mentors. Single-line transformation leads to Zhi Gua #11 泰 (Harmony of Heaven & Earth).
《周易本义》：輹音福○貞吉悔亡與咸九四同占藩決不羸承上文而言也決開也三前有四猶有藩焉四前二隂則藩決矣壮于大輿之輹亦可進之象也以陽居隂不極其剛故其象如此
大壮 (Dà Zhuàng) Line 5 [六五 · 庚申 (金) · 子孙 (金)]: Fulcrum of Righteous Vigor (䷡); command channeling peak organizational power with ethical restraint through balanced Wood and Metal synthesis. Single-line transformation leads to Zhi Gua #43 夬 (Resolute Breakthrough).
《周易本义》：喪息浪反象同易以䜴反一音亦旅卦同○卦體似兌有羊象焉外柔而内剛者也獨六五以柔居中不能抵觸雖失其壮然亦无所悔矣故其象如此而占亦與咸九五同易容易之易言忽然不覺其亡也或作疆之場亦通漢食貨志作易
大壮 (Dà Zhuàng) Line 6 [上六 · 庚戌 (土) · 兄弟 (土)]: Culmination of thunder roaring high in the firmament of heaven, pivoting toward Inverse #33 遯 (Timely Strategic Retreat) and Opposite #20 观. Single-line transformation leads to Zhi Gua #14 大有 (Abundant Possession).
《周易本义》：壮終動極故觸藩而不能退然其質本柔故又不能遂其進也其象如此其占可知然猶幸其不剛故能艱以處則尚可以得吉也
BaZi & Plum Blossom Numerology (梅花易数) Connection
Spatial & Elemental Calibration for #34 大壮: Place a bronze chariot on a broad highway motif or Earth-element accent in your workspace; cross-reference Hexagram #20 (观) when balancing Yin/Yang extremes.
Download Hexagram #34 (大壮 Dà Zhuàng) 6 Changing Lines Commentary
Get line-by-line classical Yao Ci (爻辞) interpretations from bottom Line 1 (Initial) to top Line 6 (Culmination).