第六篇 · Chapter VI

虚实篇

Weaknesses & Strengths

实 虚 虛實 虚实变幻 Void and solid

夫兵形象水，水之形避高而趋下，兵之形避实而击虚。水因地而制流，兵因敌而制胜。故兵无常势，水无常形，能因敌变化而取胜者，谓之神。

"The disposition of the military is like water: water avoids the high and seeks the low; the military avoids the solid and strikes the hollow. Water shapes its flow according to the terrain; the military shapes its victory according to the enemy."
核心命题：避实击虚 — Avoid the Solid, Strike the Hollow. Shape-shifting like water.

Section I

原文对照Original · Modern · English — Trilingual Parallel

古文 · Classical Chinese

孙子曰：凡先处战地而待敌者佚，后处战地而趋战者劳。故善战者，致人而不致于人。

今译 · Modern Chinese

孙子说：凡是先到达战场等待敌人的就安逸主动，后到达战场仓促应战的就疲劳被动。所以善于作战的人，能调动敌人而不被敌人所调动。

英译 · English (Sawyer)

Sun Tzu said: In general, whoever occupies the field of battle first and awaits the enemy will be fresh; whoever reaches the field later and has to rush into battle will be fatigued. Thus the skilled commander causes the enemy to come to him and is not caused to go to the enemy.

古文 · Classical Chinese

能使敌人自至者，利之也；能使敌人不得至者，害之也。故敌佚能劳之，饱能饥之，安能动之。

今译 · Modern Chinese

能使敌人自动进入我预定地域的，是用小利引诱他的结果；能使敌人不能到达其预定地域的，是制造困难阻止他的结果。所以，敌人安逸能使他疲劳，敌人粮足能使他饥饿，敌人安稳能使他移动。

英译 · English (Sawyer)

One who can cause the enemy to come of his own accord does so by offering him an advantage. One who can prevent the enemy from coming does so by inflicting harm. Thus, when the enemy is at ease, tire him; when well-fed, starve him; when settled, make him move.

古文 · Classical Chinese

出其所不趋，趋其所不意。行千里而不劳者，行于无人之地也。攻而必取者，攻其所不守也。守而必固者，守其所不攻也。

今译 · Modern Chinese

出兵要指向敌人无法急救的地方，行动要指向敌人意料不到的方向。行军千里而不疲劳的，是因为行进在没有敌人阻碍的地区。进攻必然得手的，是因为攻击了敌人不注意防守的地方。防守必然稳固的，是因为扼守了敌人无法攻破的地方。

英译 · English (Sawyer)

March to a place the enemy does not hasten to; strike at a place the enemy does not defend. To march a thousand li without fatigue is to travel through unoccupied territory. To attack and surely succeed is to strike what the enemy does not defend. To defend and surely hold is to defend what the enemy cannot attack.

古文 · Classical Chinese

故善攻者，敌不知其所守；善守者，敌不知其所攻。微乎微乎，至于无形；神乎神乎，至于无声。故能为敌之司命。

今译 · Modern Chinese

所以善于进攻的人，使敌人不知道防守哪里好；善于防守的人，使敌人不知道进攻哪里好。微妙啊！微妙到看不出形迹；神奇啊！神奇到听不见声息。所以能够成为敌人命运的主宰者。

英译 · English (Sawyer)

Thus one skilled at attack makes the enemy not know where to defend; one skilled at defense makes the enemy not know where to attack. Subtle! Subtle! To the point of having no form. Divine! Divine! To the point of being soundless. Thus he becomes the arbiter of the enemy's fate.

古文 · Classical Chinese

进而不可御者，冲其虚也；退而不可追者，速而不可及也。故我欲战，敌虽高垒深沟，不得不与我战者，攻其所必救也；我不欲战，画地而守之，敌不得与我战者，乖其所之也。

今译 · Modern Chinese

前进而使敌人无法抵御的，是因为冲击了敌人空虚的地方；退却而使敌人无法追击的，是因为行动迅速使敌人追赶不上。所以，我军要打，敌人即使高垒深沟也不得不脱离阵地与我作战的，是因为我进攻了敌人必须救援的地方；我军不想打，即使画地防守，敌人也无法与我交战的，是因为我设法使敌人改变了进攻方向。

英译 · English (Sawyer)

When advancing, none can resist — because he strikes at the hollow. When retreating, none can pursue — because he moves too swiftly to be caught. If I wish to engage, the enemy, despite high walls and deep moats, cannot avoid battle — because I attack what he must rescue. If I do not wish to engage, even drawing a line on the ground for defense, the enemy cannot join battle — because I divert him from his course.

古文 · Classical Chinese

故形人而我无形，则我专而敌分。我专为一，敌分为十，是以十攻其一也，则我众而敌寡。能以众击寡者，则吾之所与战者，约矣。

今译 · Modern Chinese

所以，使敌人暴露实力而我军不露痕迹，那么我军兵力就可以集中而敌人兵力就不得不分散。我军兵力集中在一处，敌人兵力分散在十处，这就能用十倍于敌的兵力去攻击敌人，造成我众敌寡的有利态势。能做到以众击寡，那么与我军当面作战的敌人就有限了。

英译 · English (Sawyer)

Thus, reveal the enemy's disposition while concealing your own. Then you can concentrate, while the enemy must divide. If I concentrate as one while the enemy divides into ten, I attack with ten times his strength. When I am many and the enemy few, those who engage us will be in dire straits.

古文 · Classical Chinese

吾所与战之地不可知，不可知则敌所备者多；敌所备者多，则吾所与战者寡矣。故备前则后寡，备后则前寡，备左则右寡，备右则左寡，无所不备则无所不寡。寡者，备人者也；众者，使人备己者也。

今译 · Modern Chinese

我军要与敌人交战的地点不能让敌人知道，敌人不知道交战地点就会处处设防；敌人防备的地方多了，那么与我军直接交战的兵力就少了。所以防备前面，后面就薄弱；防备后面，前面就薄弱；防备左边，右边就薄弱；防备右边，左边就薄弱；处处防备，就处处薄弱。兵力之所以薄弱，是因为被动地防备别人；兵力之所以充足，是因为迫使敌人防备自己。

英译 · English (Sawyer)

The place where we will fight must not be made known. If unknown, the enemy must prepare at many points; if he prepares at many points, those we actually engage will be few. Thus, if the front is guarded, the rear will be weak; if the rear is guarded, the front will be weak. If the left is guarded, the right will be weak; if the right is guarded, the left will be weak. To guard everywhere is to be weak everywhere. Those who are weak are made so by preparing against others; those who are strong make others prepare against them.

古文 · Classical Chinese

夫兵形象水，水之形避高而趋下，兵之形避实而击虚。水因地而制流，兵因敌而制胜。故兵无常势，水无常形，能因敌变化而取胜者，谓之神。

今译 · Modern Chinese

用兵的规律就像水一样，水的流动规律是避开高处而流向低处，作战的规律是避开敌人坚实之处而攻击其虚弱之处。水根据地形来决定流向，用兵根据敌情来决定取胜策略。所以用兵没有固定的态势，就像水没有固定的形态一样，能够根据敌情变化而取胜的人，就叫做用兵如神。

英译 · English (Sawyer)

The disposition of the military is like water. Water avoids the high and seeks the low; the military avoids the solid and strikes the hollow. Water shapes its flow according to the terrain; the military shapes its victory according to the enemy. Thus the military has no constant formation, just as water has no constant shape. One who can modify his tactics in accordance with the enemy's situation and thereby succeed may be called divine.

古文 · Classical Chinese

故五行无常胜，四时无常位，日有短长，月有死生。

今译 · Modern Chinese

所以，金木水火土五行没有哪一行能永远克制其他四行，春夏秋冬四季没有哪一季能永远停留不变，白昼有短有长，月亮有缺有圆。

英译 · English (Sawyer)

Among the five elements, none always predominates; among the four seasons, none always remains; days vary in length; the moon waxes and wanes.

Section II

三层注释Annotations — Words · Institutions · Principles

字词

字词训诂 · Lexical Gloss

▼
虚 (xū) / 实 (shí)
"虚"为空虚、薄弱、无防备；"实"为充实、强大、有准备。虚实是一对动态概念——同一点在不同时间可以是虚也可以是实。Void/hollow vs. solid/full: "虚" is weakness, emptiness, unguarded; "实" is strength, fullness, defended. They are dynamic — the same point can shift between void and solid over time.
致人而不致于人 (zhì rén ér bù zhì yú rén)
"致"为致使、调动。整句：调动敌人而不被敌人所调动——这是主动权的核心表述。To cause/compel: "Cause the enemy to come to you, and be not caused to go to the enemy" — the essence of maintaining initiative.
兵形 (bīng xíng)
用兵的形态/规律。与军形篇的"形"呼应——形是可观察的部署，但虚实篇强调形的变化性。The pattern/disposition of military force: echoing Chapter 4's "形" but emphasizing its mutability.
画地而守 (huà dì ér shǒu)
在地上画一条线就当防御——形容防御之轻松，因为已经让敌人失去了进攻方向。Drawing a line on the ground as defense — describes effortless defense when the enemy has been misdirected.
乖其所之 (guāi qí suǒ zhī)
"乖"为违背、背离。使敌人偏离他原定的进攻方向。To divert: "乖" means to deviate — redirect the enemy from his intended course.
司命 (sī mìng)
与作战篇同义——命运的主宰者。掌控了虚实的转换，就掌控了战局的主动权。Arbiter of fate (same usage as Chapter 2): master the void-solid transformation and you master the battle.
典章

典章制度 · Historical Institutions

▼
信息不对称的军事价值
"形人而我无形"是人类最早的系统性信息不对称战略。在春秋战场上，侦察（斥候）和反侦察是关键环节——暴露者被伏击，隐藏者获主动。"Reveal the enemy while concealing yourself" — the earliest systematic information asymmetry strategy. In Spring and Autumn warfare, scouting and counter-scouting determined who held the initiative.
以寡击众的方法论
"我专为一，敌分为十"——孙子的集中优势兵力原则比克劳塞维茨早了2200年。通过信息优势（敌不知我所攻）迫使敌人分散兵力，然后以多打少。Sun Tzu's concentration principle predates Clausewitz by 2,200 years: force the enemy to disperse through information superiority, then strike with local superiority.
五行辩证
结尾"五行无常胜"呼应道家思想——变化是永恒的，没有绝对的优势或劣势。这种辩证思维为"兵无常势"提供了哲学基础。"Among the five elements, none always predominates" — echoing Daoist dialectics: change is eternal, no absolute advantage or disadvantage exists.
义理

义理阐释 · Philosophical Principles

▼
主动权 (Initiative)
"致人而不致于人"是本篇的哲学基石。主动权意味着：你选择战场、选择时机、选择方式——敌人只能被动应对。这在现代被称为"行动自由"(Freedom of Action)或"设定议程"(Setting the Agenda)。The philosophical cornerstone: you choose the battlefield, timing, and method — the enemy can only react. Modern equivalent: Freedom of Action or Agenda-Setting.
水的隐喻 (The Water Metaphor)
"兵形象水"——水没有固定形态，随地形而变。用兵也应如此：不要执着于固定战术，要根据敌情灵活变化。这是"适应性"(Adaptability)的最早表述，也是塔勒布"反脆弱"的核心——从变化中获益而非受损。"Force is like water" — no fixed form, adapts to terrain. This is the earliest articulation of adaptability and Taleb's antifragility.
信息即权力 (Information is Power)
"形人而我无形"——让敌人暴露而自己隐藏，创造了信息不对称。在信息不对称的情况下，我知敌而敌不知我——这就形成了绝对优势。现代版本：数据优势 = 市场优势。"Reveal the enemy, conceal yourself" — information asymmetry creates absolute advantage. Modern version: data advantage = market advantage.
分散敌人的经济学
"无所不备则无所不寡"——防御成本与防御范围成正比。如果你让敌人不知道你在哪里进攻，他就必须处处设防，兵力自然分散。这与博弈论中的"混合策略"(Mixed Strategy)异曲同工：随机化你的行动让对手无法针对性防御。Defense costs scale with defense range. Force the enemy to defend everywhere = defend nowhere. Analogous to game theory's Mixed Strategy.
Section III

战略点评Strategic Commentary — OODA, Blue Ocean & Asymmetric Warfare

OODA 循环完整版 · 虚实的现代映射Full OODA Loop · Modern Mapping of Void & Solid

👁️ 观 Observe 形人：让敌人暴露
侦察、情报、数据收集
Reveal enemy dispositions
🧭 判 Orient 击虚：找到薄弱点
分析虚实、识别弱点
Identify the hollow
⚡ 决 Decide 致人：掌握主动权
选择战场与时机
Choose where & when
🗡️ 行 Act 避实：打击虚处
快速集中力量突破
Concentrate & strike

我方OODA循环越快 → 敌方OODA被打断 → "致人而不致于人"Faster our OODA → Enemy OODA disrupted → "Dictate, don't be dictated to"

实 · 高地Solid · Defended
→💧避开
虚 · 低地Hollow · Undefended
→🌊冲击
胜Victory

🔍OODA循环 + 避实击虚：信息战的本质🔍OODA Loop + Hit the Hollow: The Nature of Information Warfare

信息战 Information warfare

微乎微乎，至于无形

虚实篇是博伊德OODA循环的原始文本。孙子的"形人而我无形"就是OODA的核心：你观察敌人，但不让敌人观察你。当你完成了观→判→决→行，敌人还在"观"的阶段——他的OODA被你打断了。Weaknesses & Strengths is the original text for Boyd's OODA Loop. Sun Tzu's "reveal the enemy, conceal yourself" is OODA's core: you observe the enemy, but don't let the enemy observe you. When you've completed observe→orient→decide→act, the enemy is still at "observe" — their OODA is disrupted.

"形人"（观）：通过侦察、佯动、试探，迫使敌人暴露部署——"能使敌人自至者，利之也"。"Reveal the enemy" (Observe): Through reconnaissance, feints, and probing, force the enemy to reveal their dispositions — "You can make the enemy come by offering bait."

"我无形"（隐）：隐藏自己的真实意图——"微乎微乎，至于无形；神乎神乎，至于无声"。"I remain formless" (Conceal): Hide your true intentions — "Subtle! So subtle as to be invisible. Divine! So divine as to be inaudible."

OODA速度差：谁的OODA循环更快，谁就掌握主动权。"致人而不致于人"——你让敌人被动应对，而非相反。现代空战中，F-35的信息优势使飞行员的OODA循环比对手快50%——这直接转化为"避实击虚"的能力。OODA Speed Gap: Whoever cycles OODA faster seizes the initiative. "Dictate to the enemy, don't be dictated to" — you force the enemy to react, not the reverse. In modern air combat, the F-35's information advantage makes its pilot's OODA loop 50% faster — directly translating to the ability to "hit the hollow."

🌊蓝海战略：商业中的"避实击虚"🌊Blue Ocean Strategy: "Hit the Hollow" in Business

金伟灿(W. Chan Kim)的蓝海战略本质上是"避实击虚"的商业演绎：W. Chan Kim's Blue Ocean Strategy is essentially the business version of "hit the hollow":

"实"= 红海：现有市场中的激烈竞争——大家都在同一片海域搏杀（如传统汽车、传统零售）。"Solid" = Red Ocean: Intense competition in existing markets — everyone fighting in the same waters (traditional auto, traditional retail).

"虚"= 蓝海：无人竞争的市场空白——"出其所不趋，趋其所不意"。你不在对手的战场上作战，而是创造一个新战场。"Hollow" = Blue Ocean: Uncontested market space — "go where the enemy does not rush, strike where the enemy does not expect." You don't fight on the enemy's battlefield; you create a new one.

案例映射：任天堂Wii避开索尼/微软的"实"（高性能主机），击"虚"（家庭休闲游戏市场）；Cirque du Soleil避开马戏团的"实"（动物表演），击"虚"（高端艺术表演）。都是"避高而趋下"——避开竞争激烈的高地，流向无人防守的低处。Case mappings: Nintendo Wii avoided Sony/Microsoft's "solid" (high-performance consoles) and hit the "hollow" (family casual gaming); Cirque du Soleil avoided circus "solid" (animal acts) and hit the "hollow" (premium artistic performance). Both "avoid the high ground and flow to the low" — bypassing fiercely contested terrain to undefended ground.

"水因地而制流，兵因敌而制胜"：没有永恒的蓝海——今天的蓝海明天会变成红海（"虚"变"实"）。必须持续寻找新的"虚"处。这就是"兵无常势，水无常形"。"Water shapes its flow according to the ground; army achieves victory according to the enemy": No blue ocean lasts forever — today's blue ocean becomes tomorrow's red ocean ("hollow" becomes "solid"). You must continuously seek new "hollows." This is "military force has no constant formation, water has no constant shape."

⚡非对称战争：以弱胜强的数学⚡Asymmetric Warfare: The Mathematics of the Weak Defeating the Strong

"形人而我无形"制造的信息不对称，是非对称战争的数学基础：The information asymmetry created by "reveal the enemy, conceal yourself" is the mathematical foundation of asymmetric warfare:

兵力乘数效应："我专为一，敌分为十"——如果敌人把兵力分散到10个点，你集中攻击1个点，你的局部优势是10:1。"以十攻其一"——这不是冒险，是数学。Force Multiplier Effect: "I concentrate as one, enemy divides into ten" — if the enemy spreads forces across 10 points and you concentrate on 1, your local advantage is 10:1. "Attack one with ten" — not risk, but mathematics.

防御悖论："无所不备则无所不寡"——防御成本与防御周长成线性关系，但攻击者可以选择任意一点集中突破。塔利班不需要在每个山谷与美军对等作战，只需要在选定的点集中攻击——这就是非对称的精髓。Defense Paradox: "Defend everywhere and you are weak everywhere" — defense cost scales linearly with perimeter, but attackers can concentrate at any chosen point. The Taliban doesn't need to fight equally in every valley; they need only concentrate at chosen points — the essence of asymmetry.

现代非对称：网络攻击（DDoS攻击一点 vs 防御全部端口）、恐怖袭击（攻击一个软目标 vs 保卫所有目标）、游击战——都是"避实击虚"的现代形式。弱者的信息优势在于：强者不知道弱者在哪里攻击。Modern Asymmetry: Cyber attacks (DDoS one point vs defending all ports), terrorism (attacking one soft target vs protecting all), guerrilla warfare — all modern forms of "hit the hollow." The weak's information advantage: the strong doesn't know where the weak will strike.

Section IV

经典战例Case Studies — Ancient · Modern · Business

古代 Ancient

韩信背水列阵·井陉之战Han Xin's Battle of Jingxing 204 BC

韩信率3万新兵对阵赵国20万大军。他先以2000轻骑埋伏赵营后方，然后背水列阵——按兵法这是"死地"。赵军见韩信犯了兵家大忌，倾巢出击。韩信军退至河边无路可退，拼死抵抗。此时埋伏的2000骑趁赵营空虚，冲入营中换上汉旗。赵军回望见营中尽是汉旗，军心大溃。"避实击虚"的完美案例：以正兵（背水阵）吸引赵军全力，以奇兵（伏骑）攻击赵军最虚之处——空虚的大本营。Han Xin led 30,000 recruits against Zhao's 200,000. He first hid 2,000 cavalry behind enemy lines, then arrayed his troops with a river at their back — a "death ground" by military doctrine. Seeing Han Xin's apparent blunder, Zhao committed all forces. Trapped against the river, Han Xin's men fought desperately. Meanwhile, the hidden cavalry seized the undefended Zhao camp and raised Han banners. Zhao troops looked back, saw their camp overrun, and collapsed in panic. A perfect case of "hit the hollow": orthodox forces (river line) absorbed enemy attention; unorthodox forces (ambush cavalry) struck Zhao's weakest point — their empty headquarters.

🎯 核心原则："形人而我无形"——韩信让赵军暴露了全部兵力（倾巢而出），同时隐藏了自己的伏兵。"出其所不趋，攻其所不守"——2000骑攻击了赵军不防守的后方。🎯 Core Principle: "Reveal the enemy, conceal yourself" — Han Xin exposed Zhao's full force deployment (total commitment) while hiding his own ambush. "Go where they do not rush, attack what they do not defend" — 2,000 cavalry struck Zhao's undefended rear.
现代 Modern

"坚忍"欺骗行动Operation Fortitude 1944

二战诺曼底登陆前，盟军实施了史上最庞大的军事欺骗计划——"坚忍行动"。通过假军队（充气坦克、虚假无线电通讯）、双重间谍、假情报，让希特勒相信盟军将在加莱登陆（距诺曼底250公里）。德军将最精锐的第15集团军部署在加莱——"备前则后寡"。诺曼底登陆时，德军防御空虚，盟军"攻其所不守"。即使登陆成功后，希特勒仍坚信诺曼底是佯攻，迟迟不调动加莱驻军——"乖其所之"的成功。Before D-Day, the Allies executed history's largest military deception — Operation Fortitude. Using phantom armies (inflatable tanks, fake radio traffic), double agents, and false intelligence, they convinced Hitler the invasion would land at Calais (250km from Normandy). Germany deployed its elite 15th Army at Calais — "defend the front and the rear is weak." When Normandy landed, defenses were thin; the Allies "attacked what was undefended." Even after the landing succeeded, Hitler remained convinced Normandy was a feint and refused to redeploy the Calais garrison — a successful "divert the enemy's course."

🎯 核心原则："形人而我无形"——让德军暴露防御部署（加莱重兵），同时隐藏真实意图（诺曼底）。"无所不备则无所不寡"——希特勒被迫两头兼顾，结果两头都弱。🎯 Core Principle: "Reveal the enemy, conceal yourself" — expose German defense deployment (heavy at Calais) while hiding true intent (Normandy). "Defend everywhere and you are weak everywhere" — Hitler tried to cover both and ended up weak at both.
商业 Business

Netflix绕过BlockbusterNetflix Bypasses Blockbuster 1997–2010

Blockbuster的"实"：9000家门店、强大的品牌、充足的库存——但被物理门店和到期罚款模式所困。Netflix的"虚击"：DVD邮寄（绕过门店）→ 流媒体（绕过DVD）→ 原创内容（绕过版权谈判）。Blockbuster始终在防守自己的"实"（门店体验），没有意识到战场已经转移。"水之形避高而趋下"——Netflix不与Blockbuster正面竞争，而是流向新的低地（邮寄→流媒体→原创）。Blockbuster's "solid": 9,000 stores, strong brand, ample inventory — but trapped by physical stores and late fees. Netflix's "hollow strike": DVD-by-mail (bypassing stores) → streaming (bypassing DVDs) → original content (bypassing licensing). Blockbuster kept defending its "solid" (store experience) without realizing the battlefield had shifted. "Water avoids the high and flows to the low" — Netflix didn't compete head-on but flowed to new low ground (mail → streaming → originals).

🎯 核心原则："兵形象水"——Netflix像水一样绕过了Blockbuster的防线。"致人而不致于人"——Netflix掌握主动权，Blockbuster被迫跟随。最终Blockbuster在2010年破产。🎯 Core Principle: "Military force is like water" — Netflix flowed around Blockbuster's defenses like water. "Dictate, don't be dictated to" — Netflix held the initiative; Blockbuster was forced to follow. Blockbuster went bankrupt in 2010.
Section V

虚实评估雷达图Void-Solid Radar — Assess Your Strengths & Weaknesses

在六个维度上评估我方与敌方的虚实对比。"形人而我无形"——了解双方的真实态势，找到"避实击虚"的机会。Assess void-solid comparison across six dimensions. "Reveal the enemy, conceal yourself" — understand both sides' true positions and find opportunities to hit the hollow.

我方评估 Our Side

6
7
5
7
8
6

敌方评估 Enemy

8
5
7
4
6
3
我方 Our Forces
敌方 Enemy Forces

紫色区域越大 = 越强
寻找我方优势维度 vs
敌方薄弱维度的交叉点

虚实分析 · Void-Solid Analysis

—
我方总分 Our Score
—
敌方总分 Enemy Score
—
孙子建议 Strategy
避实击虚，致人而不致于人。
Section VI

跨篇关联Cross-References — Links to Chapters IV & V

第五篇 · Chapter V · 兵势

兵势篇 → 虚实篇：从"奇正"到"虚实"

兵势篇的"奇正"是战术方法论——如何组合正兵与奇兵。虚实篇的"虚实"是战场分析框架——如何识别哪里是虚、哪里是实。奇正回答"怎么打"，虚实回答"打哪里"。"以正合，以奇胜"的前提是知道"实"在哪里（正兵牵制）和"虚"在哪里（奇兵突破）。

兵势篇：「以正合，以奇胜」→ 虚实篇：「避实而击虚」——奇正配比取决于虚实判断。

第四篇 · Chapter IV · 军形

军形篇 → 虚实篇：从"静态形"到"动态虚实"

军形篇的"形"是力量的静态对比——"度量数称胜"。虚实篇将"形"动态化：同一个形，在不同时间、不同位置可以是虚也可以是实。"兵形象水"——水的形随地形变化，兵的形随敌情变化。军形篇告诉你有多少牌，虚实篇告诉你怎么打这些牌。

军形篇：「胜兵若以镒称铢」→ 虚实篇：「我专为一，敌分为十」——形的优势通过虚实转换放大576倍。

谋攻 Stratagem 兵势 Momentum 虚实 Void & Solid 全胜→手段 奇正→打哪 伐谋→信息不对称（目标→方法）