How to say "外行领导内行" (wài háng lǐng dǎo nèi háng) in Chinese dialogue

wàihánglǐngdǎonèiháng

and it's amateurs leading professionals,

Idioms & Colloquial Expressions
INTERACTIVE SCRIPT TIMELINE
LINE 0139:24
shuō
shá
dōu
dǒng

saying I don't know anything,

LINE 0239:27
PLAYING SCENE
wài
háng
lǐng
dǎo
nèi
háng

and it's amateurs leading professionals,

LINE 0339:30
zūn
zhòng
shù
chuàng
zuò

disregarding artistic creation,

Show Information
Source MediaTV Series
Season & EpisodeS1 E17
Timestamp39:27
TMDB ID284110