It's not a fact, come on. Many countries that didn't choose to lock down their population did better. Actually, since vitamin D deficiency is a risk factor, it may have increased deaths and decreased the overall health of the population.
It's actually 50 million dead, not 5 million. And some experts even say, that possibly up to 200 million Chinese have died from covid so far. All those repeated lockdowns and city-wide mass tests are just being done for the 'lolz'.
P.S. I wore my tin-foil hat while posting the above. It's pretty similar to the one you're wearing.