How to say "这件事情一定不单纯" (zhè jiàn shì qíng yí dìng bù dān chún) in Chinese dialogue

zhèjiànshìqíngdìngdānchún

This matter definitely isn't simple

Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0107:19
xiàn
zài
de
xīn
qíng
néng
jiě

I understand how you feel right now

LINE 0207:21
PLAYING SCENE
zhè
jiàn
shì
qíng
dìng
dān
chún

This matter definitely isn't simple

LINE 0307:24
lái

I came here

Show Information
Source MediaTV Series
Season & EpisodeS1 E29
Timestamp07:21
TMDB ID309609