Ghost Doctor from Different Tang Dynasty

My name is He Tian. I was a doctor when I was alive and a ghost doctor when I died. But God looks down on me. Why change my name in a gamble? Rebirth? Impossible, just be a ghost in this world! It's hard to be a human being, but it's even harder to be a ghost. You have to eat, drink, and poop, but as a ghost, there are very few things to eat and drink, so you'll be hungry all day long. Although God gave him a lot of burial objects, enough for a medicine storehouse, the medicine consumed a lot of soul power when the yin and yang were changing. He was like a ghost. Because of the lack of soul power, he was missing arms and legs all day long. In this other world, I am a miserable ghost living happily.