厲聲叫戰 A Shouted Challenge
孫大聖厲聲高叫道:「那小的們,趁早去報與洞主知道,教他送出我唐僧師父來,免你這一洞精靈的性命;牙迸半個『不』字,我就掀翻了你的山場,屣平了你的洞府。」那些小妖,聞此言,慌忙急轉身,各歸洞裡,關了兩扇石門,到裡邊來報:「大王,禍事了。」孙大圣厉声高叫道:「那小的们,趁早去报与洞主知道,教他送出我唐僧师父来,免你这一洞精灵的性命;牙迸半个『不』字,我就掀翻了你的山场,屣平了你的洞府。」那些小妖,闻此言,慌忙急转身,各归洞里,关了两扇石门,到里边来报:「大王,祸事了。」
逐句解 Line by line
The Great Sage Sun cried out in a stern, ringing voice: ‘You little ones there — be quick, go tell your cave-lord to send out my master the Tang Monk, and spare the lives of this whole cave of sprites;
那 nà, vocative-deictic (那小的們 ‘you little ones there’). 教 jiào, causative ‘have (him) send out’. 一洞 ‘the whole cave(-ful)’ (一 before 洞 t4 → yí). The bravado of the challenge is entirely in character for Wukong at a demon's gate.
but should there grind from between your teeth so much as half a ‘No,’ I will heave your mountain domain clean over and trample your cave-mansion flat.’
牙迸半個『不』字 ‘to grind out half a “No” between the teeth’ — a set threat-idiom for the least word of refusal. The quoted graph 不 is baked bú by mechanical sandhi (不 before 字 t4), the natural running-speech reading. 了 le ×2, aspectual. 屣 xǐ ‘to trample (as one treads a sandal flat)’.
Those little imps, hearing this, wheeled about in a fright, each fled back into the cave, shut the two leaves of the stone door, and came within to report: ‘Great King — disaster!’
那 nà (那些 ‘those’). 扇 shàn, the measure-word for door-leaves (兩扇石門 ‘the two leaves of the stone door’). 石 shí. 了 le ×2. 禍事了 ‘disaster has struck’, the imps' stock cry of alarm.
Wukong's challenge is pure formula — the hero's boast (掀翻山場,屣平洞府) and the demand for the master's release — but its comic engine is the gap between his swagger and the imps' panic. The stock cry 禍事了 (‘disaster!’) and the slammed stone door set up the demon's entrance in the next scene.