從左進 One From the Left One Right
兩個蟲兒，一個從左進，一個從右入。那老妖𧿼起來，伸伸腰，打兩個啊欠，呼呼的也睡倒了。两个虫儿，一个从左进，一个从右入。那老妖𧿼起来，伸伸腰，打两个啊欠，呼呼的也睡倒了。
逐句解 Line by line
Two insects, one going in from the left and one entering from the right.
Fourteen characters laid out as a matched pair, left against right, going-in against entering. The novel could have said he used two. Instead it gives the sentence the same symmetry as the lamp it was named after.
That old fiend scrambled up, stretched his back, gave two yawns, and went down snoring like the rest.
The character 𧿼 for the second time in this chapter, and in a different sense from the peak-climbing of a few passages back — here it is getting up off the floor. It is a rare character and some fonts will show a box instead. 呼呼 doubles to make the sound of snoring, and 睡倒 takes 倒 as dǎo once more.
The old fiend fights off the first dose and loses to the second, and the novel gives his defeat the shape of a man going to bed: a stretch, two yawns, and snoring. He is the most dangerous creature on the mountain and a fit of drowsiness finishes him.
It is worth noticing what has not happened. Nobody has been killed in this cave. Wukong has walked in through a drain, taken two shapes, found his teacher, listened to a meeting and put an entire household to sleep, all without drawing the rod once.