A Chinese city on the Russian border is entering a "lockdown" due to an increase in coronavirus cases - even as the rest of China cautiously opens up. In Suifenhe, 1,000 miles from Beijing, people have been ordered to stay indoors, with some exceptions. The border is closed to people, although not goods, and a 600-bed isolation hospital is being built. One business owner told the BBC she was "very scared" - but another local said he had confidence in the government.