I dont understand a thing in this article except that it is clear they have been messing around with this horseshoe bat for awhile and...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2258702/
“It is now clear that bats are reservoirs of a diverse group of CoVs. Considering the documented observations of coinfection of the same bat species by different CoVs, the same CoVs infecting different bat species (26, 29, 39), the high density of bat habitats, and the propensity for genetic recombination among different CoVs, it is not unreasonable to conclude that bats are a natural mixing vessel for the creation of novel CoVs and that it is only a matter of time before some of them cross species barriers into terrestrial mammal and human populations. The findings presented in this study serve as the first example of host switching achievable for G2b CoVs under laboratory conditions by the exchange of a relatively small sequence segment among these previously unknown CoVs.”
The ‘framework’ coronavirus likely came from a bat.
Then it was likely mod’d.
I haven’t looked at it more than to see the blast run of the spike protein and the 3d model of same.