The content originally appeared on: CNN Hong Kong (CNN) - Across Asia, borders are opening and quarantine measures are lifting as even the last few countries clinging to Covid restrictions embrace a return to travel. Except, that is, in one country: China. After having their economies battered by nearly three years of halted travel, several countries in the region have reopened their doors in the past few months - bringing relief not only to their tourism industries, but to millions […]