Wikipedia has him listed as being born in 1866 in China.
https://en.wikipedia.org/wiki/Sun_Yat-sen
If he was actually born in the Kingdom of Hawaii in 1866, his citizenship would be complicated by Hawaiian citizenship law and the US annexation of the Republic of Hawaii in 1898 (and terms in which Hawaiians became Americans).
Its generally recognized that he was a naturalized american citizen. what’s under contention is as to whether he was born in the USA.
Are there any birth certificates for him?