Second person is more rare, so its easier to avoid. I would go to your local library and find specific third person written books to get a good idea.
Humans need to eat and drink in order to survive, therefore it against natural law to deprive oneself of food and water, as natural law says that species must survive.
China was surrounded to the west by mountains and deserts. These geographical features kept China isolated from the rest of the world, allowing its civilization to flourish in isolation from Europe and the rest of the world until the development of the Silk Road.
