A human can typically survive without food for up to a month or so. However, this assumes they have access to water and are in relatively decent health. Stress and environmental conditions can also impact survival time.
Survival from a fall of multiple stories is highly unlikely. Generally, a fall from just a couple of stories can cause serious injury or death. But there have been rare cases where people have survived falls from higher up due to lucky circumstances like landing in soft materials or having a particular body position.
Surviving a story fall is extremely rare. Usually, anything above two or three stories poses a significant risk of serious injury or death. But some lucky cases with unique circumstances have seen people survive falls from higher up.
It really depends on a bunch of factors like the height of the fall, the surface they land on, and their physical condition. Some people have survived falls from several stories, but it's very rare and often involves a lot of luck.
The chances of survival from a 4-story fall are extremely slim. The height and speed of the fall make it highly dangerous, with a high risk of life-threatening injuries and even death.
In the world of Kung Fu Panda fanfiction, for a human to survive, they would first need to adapt to the environment. This includes getting used to the different climates, terrains, and the fact that they are among talking animals. They could start by finding a place to stay, perhaps with a friendly family of animals. Then, they would have to learn about the power dynamics in the world, especially when it comes to kung fu. Knowing who the powerful and dangerous characters are is essential. They should also try to learn some basic survival skills, like finding food and water sources. Since they don't have the natural advantages of the animals, they would need to rely on their wits, creativity, and the ability to build relationships with the local inhabitants. If they can do all these things, they have a better chance of surviving in this fictional and exciting world.
Surviving a 3-story fall is extremely rare. The force and speed at which one hits the ground from that height are typically too much for the body to handle without sustaining critical harm.