Correct

艰深

/ jiānshēn / 
Strokes

Definition

abstruse/complicated

Example

As an Adjective

difficult to understand; abstruse

1
Jiānshēn
艰深
de
的
gàiniàn
概念
  
/
lǐlùn
理论

abstruse concept/theory

2
Wénzì
文字
jiānshēn
艰深

abstruse writing