"According to Xiao Teng, their company has indeed conducted research on the genes of the Starry Sky People, but they haven't found any signs of modification.
At the time, I felt there might be an issue, but now thinking about it, it's not impossible...
After all, these genes are inherently within them; when everyone has a pair of hands and feet, who would question why they have them?
Even if there are occasional exceptions, they would be treated as special individuals...
Last time, I didn't think to ask if any of such genetic anomalies had been discovered, so I'll ask the next time we get in touch.
Moreover, the current genetic research on the Starry Sky is still far too behind my genetic perspective; they might not even detect the traces of modification...
But here lies an explanation for Xiao Teng's odd response at the time, yet it doesn't resolve her questions about why the Starry Sky People have these genes, or their origins...