He proudly proclaims his research in this video, he is not hiding anything:
https://www.youtube.com/watch?v=IdYDL_RK--w
https://www.vanityfair.com/news/2021/06/the-lab-leak-theory-...
>All but one scientist who penned a letter in The Lancet dismissing the possibility that coronavirus could have come from a lab in Wuhan were linked to its Chinese researchers, their colleagues or funders, a Telegraph investigation can reveal.
Source: https://archive.ph/dXc0n