沙僧難認 Sha Monk Cannot Choose
他兩個各踏雲光,跳鬥上九霄雲內。沙僧在傍,不敢下手。見他們戰此一場,誠然難認真假。欲待拔刀相助,又恐傷了真的。忍耐良久,且縱身跳下山崖,使降妖寶杖,打近水簾洞外,驚散群妖,掀翻石凳,把飲酒食肉的器皿盡情打碎。尋他的青氈包袱,四下裡全然不見。他两个各踏云光,跳斗上九霄云内。沙僧在傍,不敢下手。见他们战此一场,诚然难认真假。欲待拔刀相助,又恐伤了真的。忍耐良久,且纵身跳下山崖,使降妖宝杖,打近水帘洞外,惊散群妖,掀翻石凳,把饮酒食肉的器皿尽情打碎。寻他的青毡包袱,四下里全然不见。
逐句解 Line by line
The two of them each trod their cloud-light and leapt fighting up into the ninefold empyrean.
九霄, the ninefold empyrean, is as high as the sky goes.
Sha Monk stood by and dared not put out a hand.
Sha Monk is standing right there and cannot lift a finger. 在傍 takes bàng, at the side, held that way across the project.
Seeing them do battle in this one bout, he found in all sincerity that true and false could not be told apart.
誠然難認, in all honesty hard to tell — 難 here is nán, difficult to do, not the nàn of disaster.
He would have drawn his blade to help, but feared he might wound the true one.
欲待…又恐 is the shape of an impulse stopped by a fear: he would have, but he was afraid he might. 相助 is xiāng, to help the other one.
Having borne it a good while, he leapt down the mountain cliff instead, used his demon-quelling treasure staff, beat his way up to the outside of the Water-Curtain Cave, scattered the throng of fiends in fright, overturned the stone benches, and smashed to pieces every vessel they had been drinking and eating from.
Unable to hit either brother, he goes and smashes the furniture. 降妖 is xiáng, to subdue — the standing house reading; the automatic one gives jiàng, to come down. 盡情 is jìn, to the utmost.
He looked for their blue felt bundle, but in all four directions it was nowhere to be seen.
The blue felt bundle holds the pilgrims' baggage and, more to the point, the travel rescript stamped by the Tang court. Without it there is no legal pilgrimage. Everything in the chapter turns on this cloth.
Sha Monk's paralysis is the chapter's problem in its most practical form. He is willing to fight and able to fight, and the only thing stopping him is that swinging a weapon requires knowing which way to aim it. 又恐傷了真的 — afraid of wounding the true one — is a scruple, and the episode treats it as a real one rather than as cowardice.
What he does instead is telling. Unable to choose between two persons, he goes and attacks the furniture: benches, cups, the cave itself. Anyone who has ever slammed a door instead of finishing an argument will recognise the manoeuvre. He breaks everything breakable and still comes away without the one thing he went for.
The missing bundle is the chapter's first genuinely solid clue, and it is kept from him by nothing more than not knowing where the front door is. The novel is careful about this: Sha Monk fails because of a gap in his knowledge, not because he is outmatched. The gap gets filled in the very next passage, by which time it is far too late to help him.