The other two experts were also equally bewildered by what Rui told them, and he couldn't blame them for it.
Rui was probably the very first Martial Artist in the world who was about to embark on training a technique that involved purposefully diseasing the body with a virus.
The prospect of this moved the three experts that he consulted once they managed to realize his intentions. It wasn't every day for them that entirely new grounds were being breached when it came to the already vast and deep field of Martial Art.
It wasn't every day for Rui either, no. It did happen once a season, however.