途聞吆喝 A Shout upon the Road
師徒們在路上，遊觀景色，緩馬而行，忽聽得一聲吆喝，好便似千萬人吶喊之聲。唐三藏心中害怕，兜住馬不能前進，急回頭道：「悟空，是那裡這等響振？」八戒道：「好一似地裂山崩。」沙僧道：「也就如雷聲霹靂。」三藏道：「還是人喊馬嘶。」孫行者笑道：「你們都猜不著，且住，待老孫看是何如。」师徒们在路上，游观景色，缓马而行，忽听得一声吆喝，好便似千万人呐喊之声。唐三藏心中害怕，兜住马不能前进，急回头道：「悟空，是那里这等响振？」八戒道：「好一似地裂山崩。」沙僧道：「也就如雷声霹雳。」三藏道：「还是人喊马嘶。」孙行者笑道：「你们都猜不着，且住，待老孙看是何如。」
逐句解 Line by line
Master and disciples went along the road, taking in the scenery and letting the horse amble, when of a sudden they heard a great shout — for all the world like the roar of ten thousand men crying out at once.
The peace breaks. 吆喝 is a shout, and 喝 takes hè, the bellowing reading, not the hē that means to drink. 觀 in 遊觀 is guān, to look at; 似 in 好便似 is sì, the comparing "like"; 得 after 聽 is the light de that ties a verb to its result; and 一 before 聲 is yì.
Tripitaka's heart quailed; he reined in the horse and could go no further, and turning quickly he asked, "Wukong — where is that, that sets up such a din?"
那 asks rather than points here: nǎ, "where," since Tripitaka wants to know where the noise is coming from. Read nà, the same character would mean "that," and the chapter puts both readings within a line of each other more than once. 藏 is zàng; 中 is zhōng.
Eight Rules said, "It's just like the earth splitting and the mountains falling in."
地裂山崩, earth splitting and mountains coming down — Bajie goes straight for the end of the world. 似 is sì, and 一 in front of it drops to yí ahead of that falling tone.
Sha Monk said, "Or like the crack and peal of thunder."
霹靂, pī lì, is the splitting crack of thunder rather than its rumble — two syllables doing much the work that "crack" and "peal" do in English.
Tripitaka said, "Rather it is men shouting and horses neighing."
還 is hái, "or rather" — Tripitaka correcting the other two downward, from the end of the world to something merely human. 藏 is zàng.
Pilgrim Sun laughed: "None of you has guessed it. Hold here a moment — let old Sun go and see how things stand."
猜不著: 著 is zháo, the reading for hitting a mark, so the phrase is "guess and fail to hit it." Since zháo is a rising tone, 不 stays bù rather than dropping to the mechanical bú. 都 is dōu, all; 看 is kàn.
The idyll breaks on a roar like ten thousand men shouting at once, and each of the three disciples gives himself away in his guess. Bajie goes for catastrophe: the earth splitting, mountains coming down. Sha Monk goes for weather. Tripitaka, who has been frightened since the first syllable, settles on the ordinary — men shouting, horses neighing. Wukong declines to guess at all and goes to look, which is the pattern the whole episode will run on. He is the one who has to see for himself.