Is it possible for a person to eat, and can what they eat be digested by the body? This is akin to whether a car can be refueled or recharged, and whether it can convert energy after refueling or recharging. If not, the car can't run and the person, like a machine, will be out of order.
The brutal difference between life and a machine is that life ceases to exist after it stops functioning.
Eating is crucial for humans, medically referred to as nutrition. The Nutrition Department of Guoxie is the most renowned nationwide. Fu Xinheng consulted with Zhang Huayao:
"If the teacher cannot eat, is there intravenous nutrition?"
