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Not quite. Yang Xuanzhi's accounts mention him speaking of a man of Indo Iranian ethnicity speaking about India. The ethnicity itself is found both in Persia and India, it's the same people, the question of distinguishing does not arise. 

As for vandalism. My interactions with unsigned IPs have not been good. Hence the assumption that you were new to this. The assumption has been put away though.   (send a message to Freedom skies) 

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