Terraced taro field along the hillside of Kauai island
Unfortunately, the “sustainable” Chinese farms where people, ducks and other fowl, pigs and fish live in close confinement with each other and eat each other’s feces is the world’s main source for new stains of influenza and some other diseases. Random swapping of viruses has unintended consequences sometimes.
Ever been to Kauai?
Menehune at work. Caution.
So humans left Africa, migrated to China and started doing everything thousands of years before anyone else?