Unlike in Monaco, mainland and Hong Kong systems do not mix
Loosening our border controls in the interests of 'integration' can only lead to chaos

Thousands pour in to apply for schools
There is a very unusual street in Monaco. No fence runs down it, no barbed wire has been erected along it and no one patrols it. Yet home prices on one side are multiples of what they are on the other.
This riddle has a simple answer. One side of this street lies in Monaco and the other side lies in France. If you live on one side of the street, you pay no income and estate taxes. If you live on the other side, you pay the all-pervasive French taxes.
This difference creates a firmer border between the two than any wall surmounted by broken glass and machine gun towers. The Berlin Wall lasted only 28 years. This one has lasted hundreds and is under no threat.
You may say, of course, that Monaco gets away with it only through the sufferance of the French government. Let Paris decide to send in the troops and it's over.
True, but declaring Monaco a sovereign part of France would do little. Real integration could only be achieved by imposing the entire French legal and administrative system, most notably taxes. The immediate result would probably be a sudden increase in French social security payments as the Monaco economy falls apart. The bureaucrats in Paris know it and they let this leech continue its parasitic ways.
