chapter 34 It must be a coincidence!

"Listen to Deven."
Richard said softly, with his eyes fixed on Deven.
Hruby nodded and did not stop.
"Warm disease is caused by inhalation through the mouth and nose, and it first offends the lungs and then spreads to the pericardium. The lungs are responsible for air circulation, defending the body, and the heart is responsible for blood circulation, providing energy..."
The people frowned even more. Deven changed the content again, "A Treatise on Epidemic Febrile...