Issue has article probing Eastern China (7)
I believe the answer is:
emanate
'issue' is the definition.
(both can mean to give out or radiate)
'article probing eastern china' is the wordplay.
'article' becomes 'an' (indefinite article).
'probing' means one lot of letters goes inside another (probe can mean to make a hole in).
'eastern' becomes 'e'.
'china' becomes 'mate' (china plate is Cockney rhyming slang for mate).
'e'+'mate'='emate'
'an' placed within 'emate' is 'EMANATE'.
'has' acts as a link.
(Other definitions for emanate that I've seen before include "Give out, emit" , "Manatee (anag.)" , "Emerge or originate" , "Send out" , "Flow or proceed from" .)