How to say "关键中的关键来了" (guān jiàn zhōng de guān jiàn lái le) in Chinese dialogue

guānjiànzhōngdeguānjiànláile

Here's the critical thing.

Idioms & Colloquial Expressions
Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0119:53
zhí
dǎo
dào
kāi
kǎo
qián
shí
miǎo
zhōng

We tried to solve it until ten seconds before the exam began.

LINE 0219:55
PLAYING SCENE
guān
jiàn
zhōng
de
guān
jiàn
lái
le

Here's the critical thing.

LINE 0319:57
méi
lái
de

I didn't get

Show Information
Source MediaTV Series
Season & EpisodeS1 E8
Timestamp19:55
TMDB ID309663