血噴柳變 Blood Transforms the Willows
那大聖念動咒語,咬破舌尖,將血噴在樹上,叫:「變!」一根變作長老,一根變作自身,那兩根變作沙僧、八戒;都變得容貌一般,相貌皆同,問他也就說話,叫名也就答應。他兩個卻才放開步,趕上師父。這一夜依舊馬不停蹄,躲離了五莊觀。那大圣念动咒语,咬破舌尖,将血喷在树上,叫:「变!」一根变作长老,一根变作自身,那两根变作沙僧、八戒;都变得容貌一般,相貌皆同,问他也就说话,叫名也就答应。他两个却才放开步,赶上师父。这一夜依旧马不停蹄,躲离了五庄观。
逐句解 Line by line
That Great Sage recited a spell, bit open the tip of his tongue, sprayed the blood on the trees, and cried, "Change!"
念動咒語 (niàn dòng zhòuyǔ) "recited a spell." 咬破舌尖 (yǎo pò shé jiān) "bit open the tongue-tip"—drawing the transforming blood. 將血噴在樹上 (jiāng xuè pēn zài shù shàng) "sprayed the blood on the trees," disposal 將 (jiāng).
One root became the elder, one became himself, and the other two became Wujing and Bajie; all took on identical features and matching forms—question them and they would speak, call their names and they would answer.
變作長老 (biàn zuò zhǎnglǎo) "became the elder," 長 (zhǎng). 都變得容貌一般 (dōu biàn de róngmào yìbān) "all changed to the same likeness," complement 得 (de). 相貌皆同 (xiàngmào jiē tóng) "features all alike," 相 (xiàng) "appearance." 答應 (dāyìng) "to answer," 應 (yìng) "to respond" (not 應 (yīng) "ought").
The two of them then set off at a stride and caught up with their master.
放開步 (fàng kāi bù) "set off at a stride." 趕上師父 (gǎn shàng shīfu) "caught up with the master"—the disciples rejoin the escaping party.
That night, once more without the horse resting a hoof, they got clear away from the Five-Villages Abbey.
依舊馬不停蹄 (yījiù mǎ bù tíng tí) "again the horse never resting its hooves." 躲離了五莊觀 (duǒ lí le Wǔzhuāng Guàn) "slipped away from the Five-Villages Abbey," 觀 (guàn).
The blood-and-willow transformation is a signature marvel: Wukong's own blood, sprayed on the felled trees, gives them the pilgrims' shapes, voices, and names, so that they can stand the questioning and the whipping in the real party's stead. It is a doubling of the doubling from the sleeve-scene—decoys so perfect they answer to their names—and it buys the pilgrims a second escape into the night.