At this point we know the kung flu was engineered for human infection
They did this by using mice with human genes to mimic the infection of human lungs
Simple question:
What race's genes were used as the target?

If it was Chinese genes, then I can understand that it may be they were studying it to develop vaccines, and incompetence caused it to escape.

But what does it mean if they were using European genes as the target? Especially since Chinese military now considers bioweapons key.