如何讀爻
爻是你的具體位置
卦給你整個情境：時、勢，以及上下兩個力量如何互動。爻給你的是你在這個情境中的具體位置。
這是為什麼起卦之後變爻特別重要。易經不只給你一張整體的圖，還直接指出你此刻在這張圖的哪一位。 讀爻，讀的就是你自己。
The hexagram gives you the overall situation: its time, its tendency, and how the two three-line forces interact. The line gives you your specific spot within that situation.
This is why moving lines matter so much after a cast. The Yi doesn't just hand you the picture; it points to exactly where in that picture you are right now. Reading the line means reading yourself.
六步讀爻
每讀一爻，依六步進行：前兩步確定「我是誰、此刻是什麼時候」； 中間兩步看結構關係，即應與比；後兩步看上下秩序，即承與乘。
For each line, follow six steps. The first two establish who you are and when this is. The middle two examine structural relationships: correspondence and proximity. The last two examine hierarchical order: which line carries, and which rides.
六位各有性格。初是開始，萌發未顯；二是內卦中位，象徵臣、民或內政；三是內外之際，是過渡也是危險；四是外卦之始，近君之位，主執行或諫議；五是外卦中位，是君、主或主導者所在；上是過位，已過頂點，或退或旁觀。讀任何一爻之前，先確定它在六位中屬於哪一位。
Each of the six positions has an archetype. Line 1 (chu) is the beginning, just emerging. Line 2 (er) is the inner-trigram center: minister, the people, or domestic affairs. Line 3 (san) is the dangerous transition between the inner and outer trigrams. Line 4 (si) starts the outer trigram, close to the ruler, and stands for execution or counsel. Line 5 (wu) is the outer-trigram center, the ruler's seat. Line 6 (shang) is past the peak: retired, overshot, or merely observing. Before reading any line, anchor it on this map.
卦給出一個整體的時與勢，爻是你在這個時與勢中的階段。同一個位在不同卦中的時完全不一樣，例如乾九五是飛龍在天之時，屯九五卻是屯至極點、反而轉凶之時。讀爻必先讀卦之時。
The hexagram gives the overall situation; the line is your stage within it. The same position means something entirely different from one hexagram to the next: line 5 of Qian is the soaring dragon at full power, while line 5 of Zhun is the peak of difficulty, where pushing further turns unlucky. Reading a line presupposes reading the hexagram's time first.
六爻兩兩相應：一與四、二與五、三與六。一陰一陽為有應，代表外援、對手或彼此呼應；同為陰或同為陽則是無應，甚至是敵應，也就是同類相斥。應描寫的是遠距離的結構關係，你的同盟與對手落在哪裡。
The six lines pair across: 1 and 4, 2 and 5, 3 and 6. Opposite types, one yin and one yang, form correspondence: external support, resonance, or a partner. The same type forms no correspondence, or even outright repulsion between likes. Correspondence describes long-distance structural relationships: where your allies and adversaries sit.
相鄰兩爻為比。陰陽相鄰是親比，代表合作、互助；陰陰或陽陽相鄰是敵比，代表同質之間的摩擦。比描寫的是緊鄰之力，也就是同事、同級、最近的那一環。
Adjacent lines form proximity. Opposite types adjacent means cooperation and mutual help. The same type adjacent means friction between equals. Proximity describes the immediate-neighbor force: colleagues, peers, the closest link.
陰在下、陽在上，陰承陽，是順道。陰服從上位之陽，結構上是下承上。讀爻看到承，多為順適之義，例如下級服從上級、學生跟隨老師、後進仰望前輩。
When yin sits below yang, the yin carries, supports, and yields to the yang above. Structurally this is proper: the subordinate serves the senior. A line showing this pattern usually carries a positive note, the proper order of below supporting above.
陰在上、陽在下，陰乘陽，是逆道。陰騎在陽之上，結構上是倒置，等於下級凌駕上級、晚輩壓過前輩，本該服從的一方反而主導。讀爻看到乘，多為警訊。
When yin sits above yang, the yin rides and overpowers the yang below. Structurally this is inverted: the subordinate sits above the senior. A line showing this pattern is usually a warning, the natural hierarchy reversed, with the one who should defer now dominating.
中與正：兩個錨點
除了六步，還有兩個常與六步並用、必須記住的概念：
- 中（居中）：二位與五位是上下兩卦的中位。居中的爻，本身就帶著 不偏不倚、守中道的意思。
- 正（得位）：陽居奇位，也就是一、三、五位，為正；陰居偶位，也就是 二、四、六位，也為正。陽居偶位或陰居奇位則為不正，是位不當。
- 中正：二位是陰、五位是陽的時候，同時中也正，是讀爻中最理想的結構。 多數卦裡最強的一爻，就落在這裡。
Two more concepts appear throughout line reading. Zhong (centered): lines 2 and 5 are the centers of the inner and outer trigrams, carrying the weight of holding the middle without extremes. Zheng (correct): yang in an odd position (1, 3, 5) is correct, and yin in an even position (2, 4, 6) is correct; otherwise the line is wrongly positioned. Zhongzheng: when line 2 is yin and line 5 is yang, a line is both centered and correct at once, the strongest structural configuration in the system. Most hexagrams' strongest line lives here.
例一·乾九五
九五爻辭：飛龍在天，利見大人。
用六步走一遍：
- 位：第五位，君位。
- 時：乾之盛期，純陽之力達到飛揚的頂點。
- 應：九五對九二，皆陽，無應，同類不相應。
- 比：九四、上九皆陽，無親比。
- 承：上下皆陽，沒有陰承陽的結構。
- 乘：同上，也沒有乘的結構。
- 中正：第五位為中，陽在奇位為正，是中正。
讀法：純陽到達君位，中正卻無外援。「飛龍在天」不是借力而成，是自身之德到此自然顯現。 「利見大人」反而是提醒：這種位上純陽的君主，仍須主動求賢，找到大人來平衡過剛的風險。 中正之力雖然自足，卻不可自滿。
Reading: pure yang reaches the ruler's position, centered and correct, yet with no helpful relationships. “Flying dragon in the heavens” is not borrowed power; it is the ruler's own virtue made fully visible. The phrase “advantageous to see the great person” is the hidden caution: a pure-yang ruler at this height still needs to actively seek out great-person counsellors to balance the risk of excess strength. Being centered and correct is self-sufficient, but not safe from itself.
例二·屯九五：結構對，但時不對
九五爻辭：屯其膏，小貞吉，大貞凶。
用六步走一遍：
- 位：第五位，君位。
- 時：屯是萌發之難。雲雷已動而雨未下，整卦處在滯而未通的時候。
- 應：九五為陽，對六二為陰，有應，外援在。
- 比：六四、上六皆為陰鄰，兩邊都有親比。
- 承：六四（陰）承九五（陽），下位之陰順著承接此君。
- 乘：上六（陰）乘九五（陽），上位之陰凌駕在剛陽之上，是傳統所說的乘剛。
- 中正：第五位為中，陽在奇位為正，是中正。
讀法：從結構上看，這幾乎是最理想的一爻，中正、有應、有比，也有承。但卦辭卻說「大貞凶」， 為什麼？因為時不對。屯是萌發之難的整體時勢，再中正也改變不了全卦的大環境。 所以小貞吉，小的行動可行；大貞凶，大的行動必敗。應當施之以小，待時機成熟再談大動作。
這個例子是讀爻最重要的一課：結構不能越過時。即使中正、有援、 有助，若整個大時勢仍是萌發之難，大動依然必凶。讀爻必先讀卦之時，否則結構看得再清楚，也還是誤讀。
Reading: structurally, this is close to ideal: centered and correct, with correspondence and proximity on both sides, and carrying from below. Yet the line statement says “great firmness brings misfortune.” Why? Because the time is wrong. Zhun is the whole-hexagram time of sprouting difficulty, and no amount of structural rightness overrides the situation's overall stage. So “small firmness is auspicious, great firmness is unlucky”: small actions work, big actions fail. Apply effort in small measures, and wait for the time before acting big.
This is the most important lesson in line reading: structure cannot override time. Even when a line is centered, correct, and well supported, if the overall time is sprouting difficulty, big action still fails. Read the hexagram's time first, or every structural observation will mislead you.
與「如何讀象」的關係
兩個方法是互補的：
- 如何讀象，讀整個卦的圖與結構，給你時與勢。
- 如何讀爻，讀你在這個卦中的具體位置，給你我在哪裡、該怎麼動。
順序是：先讀象，看時；再讀爻，看位；然後把兩者連起來。不要一開始就跳進字面解讀， 永遠是先看圖、再看位，最後才看文字。
The two methods complement each other: reading the image gives you time and tendency; reading the line gives you your specific spot. Order matters: image first for time, then line for position, then connect the two before reading the text itself. Never jump straight to the words; always image first, then position, and only then the text.
練習
選三個卦，建議是第三屯、第二十九坎、第六十三既濟，讀它們的九五或六五爻，按六步走一遍； 再把同一卦的六二讀一遍，比較五位之君與二位之臣在同一個時勢裡各自的處境。
進階：在位索引中看同一個位在六十四卦中的不同表現。位的性格不是固定的，會隨時勢變化，展現出不同的角色。
Pick three hexagrams: Hexagram 3 (Zhun), Hexagram 29 (Kan), and Hexagram 63 (Jiji). Walk through line 5 of each using the six steps, then walk through line 2 of the same hexagrams. Compare how the ruler at line 5 and the minister at line 2 fare under the same overall time. For more depth, see the Position Index for how each position behaves across all 64 hexagrams.