Ethnic Chinese person with Chinese uniform (6)
I believe the answer is:
manchu
'ethnic chinese' is the definition.
'manchu' can be an answer for 'chinese' (I have seen 'Old Chinese' mean 'manchu' so perhaps 'chinese' could also mean 'manchu'). I am unsure of the 'ethnic' bit.
'person with chinese uniform' is the wordplay.
'person' becomes 'man' (man is a kind of person).
'with' says to put letters next to each other.
'chinese' becomes 'ch' (I've seen this in other clues).
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'man'+'ch'+'u'='MANCHU'
Can you help me to learn more?
(Other definitions for manchu that I've seen before include "Asian language" , "Member of Chinese family" , "Seventeenth century conquerors of China" , "Chinese dynasty overthrown in 1911" , "Old Chinese" .)