Early Chinese chronicles mention them first, when they built a two and a half thousand kilometer long great wall to stop the invading Hun (then call Hewng-Noo) hordes. The Hun raids went on for 300 years, and in historic notes, the name Hewng-Noo disappears at about the same time Greek-Roman historians mention the "Hunnees". For example, the Armenian king hired Hunnees to raid the borders of Persia. At around 350 A.D. leftover Hun tribes from outside China merged with other Hun tribes from the edge of Persia, and formed an invasion army. They crossed the Volga river, defeated the Sarmatians and German Goths. Some years later, part of the Hun army entered Pannonia (in 377 A.D.) and stayed, as mercenaries paid by the emperor. Their main forces were encamped between the Black and the Caspian Seas, though years later some of them appeared at the Danube, others invaded Sylesia from southern Poland. Contemporary literature says "The secret of the Huns' success is their archery. They are armed with bows and arrows, they hit with scary accuracy, sending flying death out with every shot, and they never miss their targets in their evil combat race. The antique world has never seen such a remarkable harmony of horse and rider." According to the Romans, the Huns' primary weapon was the bow. No doubt, they were experts with the bow and arrow, from simple horsemen to their chiefs. It was no wonder then that the bow became the symbol of power both in their own and their enemies' eyes. When the Huns appeared in that part of the world, people living there started to move towards the west, initiating the great migration of nations, and the deterioration of the western Roman empire. The migration of the stirred-up nations seriously redrew the map of Europe. At the time, the chief of the Huns was called Rooga. After his death, his brother Moondzook's sons inherited the tile. They were named Bleda and Attila. First the older son, Bleda, and after his death Attila became leader of the Huns. Attila is described as the greatest king of the Huns, there were legends circulating around about him even in his lifetime. "He was a man who was born to conquer nations, to terrify the world. He walked haughtily, flashing his eyes, his body language also showed his arrogant pride. Although he liked fighting, he always considered, and achieved most things by common sense. He was merciful to implorers, and kind to the ones who yielded to him. He was clever and sly, always hitting somewhere else other than where expected. He lived in a wonderful carved wooden castle. Surrounded by wealth and pomp, Attila himself dressed modestly. He wore very simple but immaculate clothes, undecorated boots and sword, sat on a wooden throne, ate and drank from wooden utensils. He demanded his court and followers look and dress in a wealthy manner however, decorated with gold and jewels to the point of their boots , and even to the equipment of their horses and their weapons. His guests ate with silver utensils, and drank wine from silver cups. Still, he didn't make anyone bow down or show subjection . His modesty and informality made a great impression on delegates visiting him. On the other hand, his personality was quite oppressive, neither his followers nor his sons would dare to look him in the eyes. No wonder then, that he was remembered so well in world history. Attila considered his power to be God-given, and legends were spread even during his lifetime such as about the sword of the war God Mars, which he supposedly found in Carpathia. Attila died in the year 453A.D. The Huns, according to their mourning customs, cut their faces, held a funeral feast, and buried him in a triple casket made of gold, silver and iron. The slaves burying him were shot dead. The Hun empire collapsed with his death. The main role of the Huns in world history was setting the opening chapter in the collapse of the west-Roman empire, by demolishing their border defenses and opening the empire up for barbarian invasions.