The group of independent experts spent about 4 and a half hours on its longest site visit since completing two weeks of quarantine on Thursday, and did not speak to waiting journalists.
The WHO, which has sought to manage expectations for the mission, has said its members would be limited to visits organised by their Chinese hosts and have no contact with community members, because of health curbs.
The group has so far also visited hospitals where early cases were detected, markets, and an exhibition on the battle with the outbreak in the provincial capital of Wuhan.
No full itinerary for the group’s field work has been announced.