In short: If you do not have the right to defend a thing, you do not truly own it. If I give you an apple, but say “you’re not allowed to stop me if I try to take it back”, then you do not truly own the apple. Even if I continue to let you have the apple, ultimately I remain the sole owner of the apple (despite any illusions of the contrary) because I have the exclusive power over it. This applies to the self as well; if you do not have the right to effectively defend yourself, you are effectively owned by your government.
If only your government has the authority to physical force towards defense of your property and yourself, then it is your government that truly owns you and ‘your’ property. All notions of ownership you may have are illusory, in the absence of such rights to defense.
Now in China, at least there is no illusion of freedom. Everyone knows they are owned by the government.