How to say "这背后一定有我们不知道的事情" (zhè bèi hòu yí dìng yǒu wǒ men bù zhī dào de shì qíng) in Chinese dialogue

zhèbèihòudìngyǒumenzhīdàodeshìqíng

there must be something we don't know behind it.

Idioms & Colloquial Expressions
Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0123:20
zhè
jiù
shuō
míng

there must be something we don't know behind it.

LINE 0223:21
PLAYING SCENE
zhè
bèi
hòu
dìng
yǒu
men
zhī
dào
de
shì
qíng

there must be something we don't know behind it.

LINE 0323:24
shén
guān
shī
gāng
gěi
huì
fēi
niáng
niáng
zuò
wán
shì

Master Shenguan just finished a ritual for Consort Hui,

Show Information
Source MediaTV Series
Season & EpisodeS2 E6
Timestamp23:21
TMDB ID124595