Ying Ren, Duke mu of Qin, went out for a ride for a long time, but the horse was eaten by a group of savages. Sergeant Qin wants to kill these savages. Ying Renhao says: they only eat my horse when they are hungry. Because a horse kills people, it's inhumane! I've heard that if you like horse meat but don't drink, it's not good for your health. You can give a lot of wine to the savages and let them go. 

Many years later, Ying Renhao was besieged by the Jin army and seriously injured. He died in the battle. At this time, a group of savages rushed out to kill the enemy bravely. They not only saved Ying Renhao, but also captured the king of Jin. These savages just want to repay Ying Ren's kindness of having a good meal and not killing him.