A team of WHO experts investigating the origins of Covid-19 visited a market in Wuhan where one of the first reported clusters of infections emerged over a year ago.
Members of the group arrived at Huanan seafood market - which has been sealed since January last year - driving into its barricaded premises as guards quickly blocked others from entering.
The mission has a remit to explore how the virus jumped from animal to human. But with the fieldwork element of a trip in its early stages, World Health Organization officials have already downplayed expectations of finding the source of a virus which has killed more than two million people and devastated the global economy.