That's the point though, if the spouse cannot have a child, the marriage is annulled and the fertile partner gets a different spouse. The idea is, "unwelcomed"

That's the point though, if the spouse cannot have a child, the marriage is annulled and the fertile partner gets a different spouse. The idea is, "unwelcomed" is not an issue. In the Uighur regions, China is already practicing a form of marriage enforcement to make sure there's more han babies in the region.