Hua Tuo nodded as Zero recited everything correctly from his earlier lecture about the cow's surgery. The mother had been prepared for the operation the previous night and was currently waiting in the makeshift operating stable.
Zero was initially shocked when he was told that the cow would be standing up while they did the surgery. Hua Tuo then explained that animals had different anatomies from humans. The cow's organs were closer to the rear and lying down would only make things more difficult for both the cow and the doctor.
"Remember the needles? You'd have to also stick them in deeper because the cow's skin is thicker than human's. They also have different meridian points so be careful when you're numbing the area," Hua Tuo warned his student who was looking paler by the second.