This was called heqin (peace through marriage ties). During the Qin and Han dynasties, the Hun nomads became a threat to the people of the Central Plains, launching numerous southward invasions.

• 这叫做“和亲”（利用结婚来取得和平）。秦汉时期，匈奴成为了对中原人民的一种威胁，进行无数南下入侵