Jianzhou Jurchens
The transfrontiersmen became part of the Jurchen elite and were assimilated into Jurchen culture to the point where their ancestry was the only thing that differentiated them from Jurchens. Nurhaci differentiated between groups of Han Chinese based on the date they became part of the Later Jin dynasty, a state created by the Jianzhou Jurchens which later became the Qing dynasty.