gé​háng​rú​gé​shān

different trades, worlds apart

Senses

隔行如隔山 gé​háng​rú​gé​shān different trades, worlds apart

(idiom) different professions are separated as if by a mountain; to someone outside the profession, the specialized knowledge and skills are a closed book

References

see 隔行如隔山/隔行如隔山 行/行