需 → 屯
第5卦 需 (Waiting) 变 第3卦 屯 (Difficulty at the Beginning)
䷄
需
Waiting
Water / Heaven
→
䷂
屯
Difficulty at the Beginning
Water / Thunder
变爻不变爻
变爻
此变化涉及 2 个变爻（第 2、3 爻）。
第二爻
九二 需于沙。小有言。終吉。
需xūwaiting
于yúon
沙shāthe sand
小xiǎothe small
有yǒuhave
言yánthings to say
终zhōngin the end
吉jíauspicious
Nine in the second place means: Waiting on the sand. There is some gossip. The end brings good fortune.
第三爻
九三 需于泥。致寇至。
需xūwaiting
于yúin
泥níthe mud
致zhìinviting
寇kòuthieves
至zhìto approach
Nine in the third place means: Waiting in the mud Brings about the arrival of the enemy.
卦象变化
上卦Water → Water
下卦Heaven → ThunderThe Creative → The Arousing
焦氏易林
西誅不服，恃強負力。倍道趨敵，師徒敗覆。
Campaigning west to punish the unsubmissive; relying on strength and force. Doubling the march to rush the enemy; the army is defeated and overturned.
— 焦延寿《焦氏易林》，公元前一世纪
注释
雲上於天，需以待時。然西征不服之邦，恃強負力，倍道趨敵——行軍倍程乃兵家大忌，士卒疲弊而糧道斷絕。師徒敗覆，全軍覆沒。驕兵必敗，不待敵至而自潰。從需至屯（雲雷屯），等待之養轉為萬事初始之艱難：未能持守需之耐心，冒進躁動，陷入屯之錯綜困局，如雲雷交作而萬象未定，一步之差即成覆轍。
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