The Han nationality mastered iron smelting technology in ancient weapons very early, and all kinds of ancient weapons were the most advanced in the world at that time. Why do they often wander?

First, China often hanged nomads. Emperor Wu of the Han Dynasty invaded the Xiongnu in the north and finally annexed the southern Xiongnu. There are many examples of Emperor Taizong pacifying Turks. Huns and Turks have been driven to the west, and westerners have been beaten with no strength to fight back. Doesn't this just show our ability? Otherwise, do you think that sites outside the eighteen provinces of the Han Dynasty are paid by telephone?

Second: China has indeed mastered the technology of smelting iron, but who said that ethnic minorities don't have iron? Ancient weapons are the most advanced. . . How many generations ahead of nomadic people? Han people made many breakthroughs in bows and arrows and engineering equipment in the cold weapon era, but nomadic people were not bad either.

Third: weapons are important, but they are not the only factor that determines victory. During the Anti-Japanese War, the weapons and equipment of China Army and Korean War Volunteers were also worse than those of the enemy. Didn't they defeat the enemy just the same? Nomads make a living by hunting, which is equivalent to conducting combat readiness training every day. Farming civilization cultivates land every day, and its combat effectiveness will definitely be weaker, so there have been standing armies in all dynasties. What you call "often hanged by nomads?" Refers to the period when farming civilization is weak or lacks effective organization. History has proved that Han people can still abuse nomadic people as long as they are scientifically trained and carefully organized.

Fourth: According to your description, this kind of thing often happens in West Renye Fang, and there are people who have been beaten to extinction everywhere. The Roman empire was destroyed by Germanic barbarians, and Attila's Xiongnu army was called the whip of God. Mongolia's Western Expedition is called "Yellow Disaster" by westerners in horror. Military issues cannot be completely equated with economic level.