Zhou Lei said that the place where the epidemic was found is not equal to the place of origin of the epidemic, so virus tracing should still adhere to a scientific attitude. Zhou Lei said at the meeting that the joint expert working group at home and abroad jointly carried out traceability research in Wuhan.
Chinese scientists shared all the data and materials they had in accordance with the working principles of science, openness, objectivity and transparency, and the results were collectively recognized by experts. "We fully share the findings and data without any concealment or reservation," he said.