Chapter 1579

Ye Fan: "The Nightmare Space is not an idiot; if you let Touma hold an immortal weapon, isn't it obvious that there's a problem?"

Umaru: "Oh, right. Sure enough, even if she becomes a Great Luo Jin Xian, Miss Su's suggestions still can't be listened to. It's simply poisonous."

Su Xiao: "Umaru, you actually dare to look down on me?"

Umaru: "How am I looking down on you, you have a criminal record!"

Zhang Taixuan: "Buy a physics holy sword. When the time comes, I'll give you pointers."

Nyaruko: "Yes, a crowbar is the strongest!"

Su Xiao: "But, can Kazusa lift it? That thing weighs more than twenty catties; can she swing it?"

Touma Kazusa: "More than twenty catties, I can still lift it. Miss Su looks down on people too much."

Su Xiao: "I mean swing, not lift. Lifting it is simple; wanting to use it as a weapon isn't just about lifting it. Like a sword, once it reaches a few catties, if you are asked to hold it straight out, you'll feel it's difficult. Do you think there are ordinary people who can't lift a few catties of things?"

Umaru: "Really?"

Hu Yifei: "Of course it's true. The sword handle is half a foot, the sword blade is three feet, using the sword guard as a lever fulcrum, a three-catty sword requires more than six times the weight of the sword when held straight out; relying on five fingers and the wrist to support nearly twenty catties is quite difficult for an ordinary person who hasn't been trained. This is the lever principle."

Hu Yifei: "This is completely different from relying on arm muscles to lift things. And this is just ordinary holding; if you want to stab quickly and accurately, the requirements for human strength are even higher. Therefore, a real one-handed sword is very light. The Sword of Goujian, King of Yue, you know? That sword is only 658 grams."

Su Xiao: "The lever principle has come out? Such distant knowledge."

Umaru: "Although distant, the sword-holding technique does indeed follow the lever principle."

Touma Kazusa: "It seems so. Being able to lift a crowbar doesn't mean I can use it to attack enemies."

Just thinking about holding something weighing ten or twenty catties and flexibly attacking enemies, Touma Kazusa felt it was unlikely.

Lifting it is not very difficult.

Attacking enemies quickly, flexibly, and accurately is difficult.

Zhang Taixuan: "This is a small problem. Just buy it back first, and then I'll teach you. I guarantee you can become a physics sword saint!"