My name is Zhang Jiuzhen and I am a veterinarian.
When my grandfather left, he left me a faded canvas bag containing syringes, medicine bottles, and several other things I had never seen before. He said: The craftsmanship of our Zhang family is not only to treat animals - some diseases are in the body; some diseases are in other places.
At first I didn't believe it. Until the mule of Wang Laowen's family was possessed by evil spirits and something black lay on the beam; until the pig pen of Widow Liu's house, there were countless piglets in the middle of the night; until Butcher Zhang slaughtered the old cow that was crying, and there were cows braying outside the window every night...
Over the years, I have carried that canvas bag around villages and alleys to treat cattle, horses, pigs and sheep, and I have come across many diseases that are not "animal diseases." If it can be cured, just burn a piece of paper and say something; if it cannot be cured, you have to sacrifice your life to do it.
Grandpa also said something that I still remember: No matter what you see, don't forget that you are a human being.
These are the days when I deal with those things. If you are willing to listen, I will chat with you.