Chinese government should offer hard guarantees that all properties would eventually be completed, and at the same time that bad lenders may lose theirs.
In Russia it's quite common occurrence that a very late project by a failed developer is eventually completed and the lenders get their apartments at last, after regional government intervention.
In China it should be even simpler as the money never leave the escrow account. I wonder if there are un-escrow provisions if developer fails to deliver - in theory there should be no risk at all.