China has warned that if it opens up like the US, it will unleash a massive COVID outbreak.

According to a study conducted by Peking University mathematicians, China may confront more than 630,000 Covid-19 infections every day if it abandoned its zero-tolerance policies by relaxing travel restrictions. In a report published in China CDC Weekly by the Chinese Centre for Disease Control and Prevention, the mathematicians concluded that China could not afford to lift restrictions on travel without any more effective vaccines or treatment strategies. Using August data from the United States, the United Kingdom, Spain, France, and Israel, the mathematicians examined the probable outcomes if China used the same pandemic containment strategies as other nations. According to…