No problem. Thank you. 
 Yes, in 1802 Nguyen Phuc Anh established the Nguyen dynasty and in the second year, he asked the Jiaqing Emperor of the Qing dynasty to confer him the title "Kind if Nam Viet/Nanyue" 
 Hello could you tell me about Vietnams demographics 
 Could you tell me about the etymology instead? 
 Unfortunately that is all I really have on that specific part of Vietnams demographics.
Yes, in 1802 Nguyen Phuc Anh established the Nguyen dynasty and in the second year, he asked the Jiaqing Emperor of the Qing dynasty to confer him the title "Kind if Nam Viet/Nanyue"