China has recorded its highest number of daily new coronavirus cases in almost six weeks, sparking fears of a second wave after restrictions were eased.
Officials say the sudden rise is due to infected travellers arriving from abroad, many of them crossing the border from Russia.
A total of 108 new coronavirus cases were reported in mainland China on Sunday, up from 99 a day earlier and marking the highest number of cases since 143 infections were reported on March 5.
Heilongjiang province, which borders Russia in the north-east, has become China's new battleground against Covid-19 as the rise threatens to push the entire country back into a state of near paralysis.