The bit also works to prevent horses from biting

If the horse did not have a bit, he would eat, steal the leaves of the crops, and even bite people. Horses are driven, and they don't give orders, they don't give whips, and they kick people. When you kick someone, you can cripple them, or you can kill them. In the ancient battlefield, the role of horses is very large, if the horse kicked, or let the horse trampled, it may be killed, and the battlefield horse rampage, the lethality is still very large, coupled with the cavalry brandishing saber, the lethality is even greater. Horses can bite if they're in a hurry. After biting a person is very terrible, can bite a person's arm or thigh, a tilt of the neck can lift a person, if the head left and right, can tear a person's muscles, even can break a person's bones. Under normal circumstances, horses do not bite, especially when running, horses do not bite casually. If a child drives the horse or a stranger drives the horse while the horse is eating, he will be bullied by the horse. The horse will not obey the command, and will bite the driver's arm or thigh, and won't say anything, if no one sees it, it will be in danger. A horse bites a man, not a dog. It's much worse than a dog bites a man.