Russian border becomes China's new coronavirus frontline

China is turning its eye to its northeastern border with Russia in a bid to stamp out a possible second wave of coronavirus infections.

It comes as the country's number of new daily cases rose to its highest in nearly six weeks - with more than 90% of those involving people coming from abroad.

Half involved Chinese nationals returning from Russia's Far Eastern Federal District.

Having largely stamped out domestic transmission, China has been slowly easing curbs on movement as it tries to get its economy back on track - but there are fears that a rise in imported cases could spark a second wave of the virus.

A Chinese immigration official said the country has cut the number of people crossing its borders by 90% and has tried to stop all non-essential journeys.

Chinese cities near the Russian frontier are tightening border controls and imposing stricter quarantine measures in response to the spike in cases.

With the cities of Suifenhe and Harbin now mandating 28 days of quarantine as well as antibody testing for all arrivals from abroad.