In relation to China, I suspect that's unlikely to ever amount...

In relation to China, I suspect that's unlikely to ever amount to anything - if it was, they would have mentioned it. You can safely assume its dead.
Re Mildura, yes indeed, just a leasehold (so a liability - current and non-current). The equipment and leasehold improvements at Mildura will have been the basis of the impairment. They have tried to sell the leasehold (and business) at Sorrento for a while now, with no interest.
There will be two winners from this deal - CUB and the CEO (via salary).