HSK C5/V7-9
Correct

押

/ yā / 
Strokes

Definition

to mortgage/to pawn/to detain in custody/to escort and protect/(literary) to sign

Example

As a Verb
(in official document/contract) sign; mark in lieu of signature
As a Noun
signature; mark in lieu of signature
As a Verb
mortgage; pawn; pledge
As a Verb
detain; take into custody
As a Verb
escort