不是天風 This Is No Heavenly Wind
三藏道：「這風來得甚急，決然不是天風。」行者道：「自古來，風從地起，雲自山出，怎麼得個天風？」三藏道：「这风来得甚急，决然不是天风。」行者道：「自古来，风从地起，云自山出，怎么得个天风？」
逐句解 Line by line
Tripitaka said, "This wind comes on far too fast. It is certainly no wind of heaven."
得 is de here, the weak linking reading that hangs a description on a verb — comes so that it is fast. 甚 is shèn, very, the intensifier and not the question word. 天風, a wind of heaven, means one that arises naturally; he is saying something made this one.
Pilgrim said, "Since ancient times wind has risen from the ground and cloud has come out of the mountains. Where would you get a wind of heaven?"
He wins the exchange on a technicality and misses the point entirely. His physics is sound: wind comes off the land, cloud off the hills, so the category his master reached for does not exist. What his master meant was that something is making this wind, and Pilgrim has just argued him out of saying so. 怎麼得 puts 得 at dé — the question-word family, where the character keeps its full weight.
This is the second warning Tripitaka gets right and is talked out of. He said the mountain was wrong and was corrected; now he says the wind is wrong and is corrected again, and both times the correction is delivered as a lesson.
Pilgrim is about to go up and look, and he will see a demon making exactly this wind. He then comes back down and lies about it. The chapter is building a case, and the case is that the trouble starts with the disciple who is never wrong about demons deciding what his master needs to hear.