This hasn’t been tested yet. There was a huge scandal in Wenzhou when the local government was going to charge market prices for renewing leases there (their property market started earlier with shorter leases before 70 years was settled on nationally). The central government had to step in and make the leases turn over automatically, because the precedent set in Wenzhou could tank markets nationwide.
I bet China eventually scraps the lease system and replaces it with a universal property tax, which would solve the other problem of keeping local governments funded long term (right now they just make money on sales), while naturally deprecating the property on a yearly basis, and also making pure speculation much more difficult.
But who can say. If china switches to a property tax system (not just the nominal one easily gamed in shanghai and chongqing today), it would break a lot of buying assumptions.