European in China upset over pressure (4)
I believe the answer is:
lapp
'european' is the definition.
(Lapp is an example)
'china upset over pressure' is the wordplay.
'china' becomes 'pal' (I've seen this before**).
'upset' says the letters should be written backwards.
'over' says to put letters next to each other.
'pressure' becomes 'p' (abbreviation).
'pal' reversed gives 'lap'.
'lap'+'p'='LAPP'
'in' acts as a link.
(Other definitions for lapp that I've seen before include "Santa Claus's nationality?" , "Someone from Father Christmas's country?" , "Native of N. Scandinavia" , "Northern Scandinavian native" , "Far northerner" .)