咸 · Xián — Magnetic Resonance
King Wen Sequence #31 (咸 Xián — Magnetic Resonance) embodies serene mountain peak holding a high alpine lake. Assigned to the Dui Lake Palace (兑宫八卦 · Metal Joy) · 三世卦 (World Line 3 / Response Line 6) and resonant with Autumn Equinox Joyous Metal (秋分兑金 · 白露—霜降), its six-line binary vector (001110) pairs 艮 Gen (Stillness & Boundary) at the root with 兑 Dui (Joyous Expression) at the crown.
《大象》：山上有澤，咸，君子以虛受人。 ｜ 《彖传》：咸，感也。柔上而剛下，二氣感應以相與，止而說，男下女，是以亨利貞，取女吉也。天地感而萬物化生，聖人感人心而天下和平，觀其所感，而天地萬物之情可見矣。
Visual Archetype: alpine mirror lake reflecting stars. When Lake (Metal) interacts with Mountain (Earth), the primary strategic mandate centers on authentic interpersonal chemistry and receptive listening. Its Polarity Opposite (Cuo Gua · 错卦) is #41 损 (Disciplined Simplification), its Overturned Inverse (Zong Gua · 综卦) is #32 恒 (Persevering Constancy), and its Nuclear Core (Hu Gua · 互卦) reveals #44 姤 (Unexpected Encounter).
兑宫 · 世爻第3爻 / 应爻第6爻
For decision-makers consulting 咸 (Xián) regarding authentic interpersonal chemistry and receptive listening, the hexagram highlights the interplay between Earth foundation and Metal manifestation under the Metal 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 Metal, Metal, or Earth as its Favorable Element (喜用神).
《京氏易传》世应法：九三三宮居世，上六宗廟為應(京氏易傳原文:三公居世3爻,應爻隔三爻)
Six Lines Progression (六爻爻辞 · Bottom Line 1 to Top Line 6)
咸 (Xián) Line 1 [初六 · 丙辰 (土) · 父母 (土)]: Germination of serene mountain peak holding a high alpine lake near alpine mirror lake reflecting stars; validate root premises before accelerating authentic interpersonal chemistry and receptive listening. Single-line transformation leads to Zhi Gua #49 革 (Timely Transformation).
《周易本义》：拇茂后反○拇足大指也咸以人身取象感於最下咸拇之象也感之尚淺欲進未能故不言吉凶此卦雖主於感然六爻皆宜靜而不宜動也
咸 (Xián) Line 2 [六二 · 丙午 (火) · 官鬼 (火)]: Central lower-trigram seat anchored in alpine mirror lake reflecting stars; cultivate Earth craftsmanship in harmony with #44 姤. Single-line transformation leads to Zhi Gua #28 大过 (Extraordinary Burden).
《周易本义》：腓房非反○腓足肚也欲行則先自動躁妄而不能固守者也二當其處又以隂柔不能固守故取其象然有中正之徳能居其所故其占動凶而靜吉也
咸 (Xián) Line 3 [九三 · 丙申 (金) · 兄弟 (金) · 世爻 World]: Threshold between 艮 Gen and 兑 Dui during Autumn Equinox Joyous Metal (秋分兑金 · 白露—霜降); pace authentic interpersonal chemistry and receptive listening carefully. Single-line transformation leads to Zhi Gua #45 萃 (Converging Talent & Capital).
《周易本义》：股隨足而動不能自專者也執者主當持守之意下二爻皆欲動者三亦不能自守而隨之往則吝矣故其象占如此
咸 (Xián) Line 4 [九四 · 丁亥 (水) · 子孙 (水)]: Ministerial counsel within the Dui Lake Palace (兑宫八卦 · Metal Joy) · 三世卦; align serene mountain peak holding a high alpine lake with institutional mentors. Single-line transformation leads to Zhi Gua #39 蹇 (Recalibrating Before Obstacles).
《周易本义》：憧昌容反又音同○九四居股之上脢之下又當三陽之中心之象咸之主也心之感物當正而固乃得其理今九四乃以陽居隂為失其正而不能固故因占設戒以為能正而固則吉而悔亡若憧憧往來不能正固而累於私感則但其朋類從之不復能及逺矣
咸 (Xián) Line 5 [九五 · 丁酉 (金) · 兄弟 (金)]: Fulcrum of Magnetic Resonance (䷞); command authentic interpersonal chemistry and receptive listening through balanced Metal and Earth synthesis. Single-line transformation leads to Zhi Gua #62 小过 (Meticulous Precision in Details).
《周易本义》：脢武杯反又音每○脢背肉在心上而相背不能感物而无私係九五適當其處故取其象而戒占者以能如是則雖不能感物而亦可以无悔也
咸 (Xián) Line 6 [上六 · 丁未 (土) · 父母 (土) · 应爻 Response]: Culmination of serene mountain peak holding a high alpine lake, pivoting toward Inverse #32 恒 (Persevering Constancy) and Opposite #41 损. Single-line transformation leads to Zhi Gua #33 遯 (Timely Strategic Retreat).
《周易本义》：頰古協反○輔頰舌皆所以言者而在身之上上六以隂居説之終處咸之極感人以言而无其實又兌為口舌故其象如此凶咎可知
BaZi & Plum Blossom Numerology (梅花易数) Connection
Spatial & Elemental Calibration for #31 咸: Place a alpine mirror lake reflecting stars motif or Metal-element accent in your workspace; cross-reference Hexagram #41 (损) when balancing Yin/Yang extremes.
Download Hexagram #31 (咸 Xián) 6 Changing Lines Commentary
Get line-by-line classical Yao Ci (爻辞) interpretations from bottom Line 1 (Initial) to top Line 6 (Culmination).