What happens when Hong Kong opens its borders to the mainland, where cases are surging?

How ready is Asia for COVID's big chance to escape China once again? The world's most populous nation was cut off from the rest of the world for three years. Now it's dropped lockdowns, other quarantine rules and mass testing. The virus is spreading. But the real numbers are hidden in even looser statistics. Australia is taking precautions, announcing testing for all travelers from China.