Correct

懂行

/ dǒngháng /
Strokes

Definition

to know the ropes

Example

As a Verb

know the business; know the ropes

1
hěn
dǒngháng
懂行
  

He knows the subject well.

As a Noun

competent; experienced

2
Xiàng
dǒngháng
懂行
de
rén
tǎojiào
讨教

go to knowledgeable and experienced person for advice