6. Iron Age
Spread of the "Kam-Tai" lingusitic area as Tai and Kam-Sui diversify
Mass displacement of Hmongic and Mienic southward
Vietic, Katuic, etc. diversify
Spread of the "Kam-Tai" lingusitic area as Tai and Kam-Sui diversify
Mass displacement of Hmongic and Mienic southward
Vietic, Katuic, etc. diversify