A sequence of four letters about one native (7)
I believe the answer is:
afghani
'one native' is the definition.
(I have seen 'Native of Kandahar ' mean 'afghani' so perhaps 'native' could also mean 'afghani')
'a sequence of four letters about' is the wordplay.
'a' becomes 'an'.
'sequence of' becomes 'af' (I am not sure about this - if you are sure you should believe this answer much more).
'four letters' becomes 'ghi' (I've seen this in another clue).
'about' means one lot of letters goes inside another.
'af'+'ghi'='afghi'
'an' placed inside 'afghi' is 'AFGHANI'.
Can you help me to learn more?
(Other definitions for afghani that I've seen before include "Pashto" , "Native of Kabul, for instance" , "Asian money" , "language" , "Asian capital" .)