Why does the novel Fourth Master and His Horse use a lot of space to describe in detail the Fourth Master driving the horse?

The Fourth Master and His Horse is a famous novel. It uses a large amount of space to describe the Fourth Master driving the horse in detail in order to emphasize the joy and bravery of the Fourth Master driving the horse, as well as the deep relationship between him and the horse. emotion. The process of the fourth master driving the horse is described very wonderfully. Sometimes he will jump close to the horse's feet in dangerous situations. Sometimes he will use his own strength to help the horse jump over the insurmountable mountain and save the horse from disaster. come out. The fourth master is riding a horse and galloping freely in the wilderness, which also represents his yearning for freedom and his harmonious relationship with nature.