What lawyers? When I register where I live I don't use a lawyer I tell my local council, in China you usually register at a Police station, I need to be in my property for 6 months prior to selling it for it to be my abode to avoid capital gains its not a hypothetical! You can mess around with the duration but property is not a liquid asset class people don't expect to buy and sell it on a whim!
The government will know where you live and what you own but in your dystopian China, people aren't allowed to live where they please? you can't move around? If you happen to acquire multiple properties prior to the law change you'll be stuck in the one you currently live in? Doesn't seem 'simple' to me
But hey keep defending that hill with the flag you planted on it!
As a chartered accountant. I must take issue with your understanding (lack of) capital gains tax law.
I take it you're talking about the U.K. tax law, and you lived in the U.K.. in the U.K. it is a requirement that upon selling your property, you have to declare capital gains tax due. It's true that you can select which ever property to be your main residence to avoid capital gains tax. But in so doing, all your other properties would then automatically become a liabilities for future capital gains upon sales of those properties.
Each residence are entitled to ONE main residence only. So you do not escape capital gains tax on other properties. You can select which property is your main residence. But you must have utilities bills and council tax in your name.
And lawyers and accountants would be needed to confirm this. Although like all things you can do it yourself. But most of us don't have the skills, particularly in conveyancing. So There's always records for the tax authority to check if they want to.
I know other people have tried and got away with it by declaring more than one main residence. But you're committing a crime!