Use it for tax payment, basically returning back to Govt. and hoping it will make good use of it for the needy..
I'm gonna print flyers telling everyone how many hospitals that $75 billion could have built.(The new Children's Hospital cost $13b, so at least 5) But hey, who needs doctors if you can have a new IPhone instead.
The chance to be frivolous, selfish, extravagant has passed me by most of my adult life, either through choice or circumstance. So I have zero qualms about taking this money this time and being all 3 of those things. I'm going to buy lots of rose bushes, an antique arbour and some silk material to make cushions that in a few years time I will sit on underneath the roses and raise a glass to the HK government for providing me with the dosh to enjoy it. Bliss.