端的可有怪 Was There Really a Fiend
長老道：「是啊，悟空不曾離我。」那獃子跳著嚷道：「師父，你不曉得，他有替身。」長老道：「悟空，端的可有怪麼？」长老道：「是啊，悟空不曾离我。」那呆子跳着嚷道：「师父，你不晓得，他有替身。」长老道：「悟空，端的可有怪么？」
逐句解 Line by line
The elder said, "That is so. Wukong never left me."
The alibi is confirmed by the person it was built for. He is not lying; he saw what he was meant to see, and it looked exactly like his disciple.
That blockhead jumped up and shouted, "Master, you do not know — he has a stand-in!"
著 is zhe, jumping while he shouts. 替身 is a substitute body, a stand-in, and it is precisely and completely right. Bajie has worked out the whole method, including the part he never saw.
The elder said, "Wukong, was there really a fiend or not?"
的 is dì in 端的, really or truly — not the ordinary particle de this character carries almost everywhere else in the chapter. Tripitaka asks the one question that matters, plainly, and gives Pilgrim nowhere to go.
Bajie is right twice over and believed neither time. He named the trick, the motive and now the mechanism, and all he gets is his master agreeing with the other side.
Then Tripitaka asks the direct question, and it lands. Not who is lying, but the plain matter of fact: was there a fiend. That is the one thing nobody has been willing to say out loud since the crag.