Bhak Jong-hwa, a professor in the biomedical engineering department at the Ulsan National Institute of Science and Technology (UNIST), said that the ancient Vietnamese, which was a population that flourished with rapid agricultural development after 8,000 BC, slowly travelled north to ancient civilizations in the Korean Peninsula and the Russian Far East. Bhak said that Korean people were formed from the admixture of agricultural Southern Mongoloids from Vietnam who went through China, hunter-gatherer Northern Mongoloids in the Korean Peninsula and another group of Southern Mongoloids. Bhak said, ""We believe the number of ancient dwellers who migrated north from Vietnam far exceeds the number of those occupying the peninsula"," making Koreans inherit more of their DNA from southerners.