But Feng, after all, had been in contact with people from Earth for a long time, so she possessed a certain basic scientific knowledge. After a brief reflection, she immediately realized that the reason the Kedal metal blade couldn't penetrate was most likely because the general had used magic to create a defense shield around his body.
Kedal metal was practically invincible on a physical level. The national defense research departments created armor-piercing rounds from this metal that could completely penetrate a tank and bury deeply into the ground, which speaks volumes about its formidable power.
However, despite this, Kedal metal wasn't omnipotent. When facing defense shields composed of magic, such metal weapons appeared particularly frail.