The Han Dynasty can be said to be the first dynasty in China's history in which all the troops were equipped with iron weapons. Han Jian and his ring-head knives were all high-tech weapons at that time, and octahedral Han Jian was one of the best.

Han Jian with eight sides, from its name, we can know that this sword has eight sides, and the cross section of the sword is a very beautiful octagon. This is because the sword body was polished on all sides when it was built. Eight-sided swords appeared as early as the Warring States period, when bronze swords were mostly used. Because the body of the eight-faced sword is thick, it is not easy to break, and the heavier weight makes it chop more powerfully, so the eight-faced Han sword with the same length and specifications has better performance than the four-faced Han sword. However, because the hardness of iron is higher than that of bronze, the number of octahedral Han Jian built in the early days gradually decreased from eight to six, and finally to four. At the same time, because the construction cost of Han Jian with eight sides is very high, it is not suitable for a large number of military equipment, and the last Han Jian with eight sides has gradually become a luxury for dignitaries.

In addition, the eight-faced Han sword is more powerful and domineering in appearance, and its slender, bright and straight body reminds people of upright personality, which conforms to the Confucian values of integrity and has profound cultural connotation. For a long time, the Eight-faced Han Sword has influenced future generations with its excellent performance and unique cultural connotation. It is no exaggeration to say that the Eight-faced Han Sword is the masterpiece of China's sword.