Chen Xi didn't care at all what Chen Shang and Chen Guang had in mind. The conditions he proposed were irresistible to the Chen Family; if he didn't offer substantial benefits, how could other aristocratic families be tempted?
Although encouraging these families to leave the Central Plains is all but a fixed strategy, there is still a significant difference between them leaving on their own accord and being forced to leave.
Appeal to their emotions, clarify the reasoning, entice with benefits, and only as a last resort, threaten with disaster. It's best to retain some warmth than to resolve everything through coercion, which indeed isn't a good approach.
As for Gao Shun and Zhang Liao, Chen Xi was ready to use them as a mobile Great Wall, crushing the North, then building grave mounds for the Hu People, flattening and solidifying them—will Bingzhou still count as a border?
