Indeed, there are some antique weapons in history that were cleverly designed to look like ordinary tools so that they can be carried and concealed without attracting attention. Here are a few typical examples: 1. **Concealed Daggers**: - **Folding Dagger**: This dagger can be folded up and easily hidden in a belt or bag. Although this design is more common in modern times, similar designs were also used in ancient times for concealed carrying of weapons. - **Hidden Dagger Belt**: Some warriors and assassins would hide daggers on the inside of their belts to make them look like ordinary decorations. 2. **Disguised Weapon Tools**: - **Disguised Key Sword**: This weapon looks like an ordinary key, but it can actually be unfolded into a small sword or dagger for close-range defense. - **Titanium Pen Sword**: It looks like an ordinary pen, but a miniature sword or dagger can be hidden inside, making it easy to carry and not easy to be discovered. 3. **Disguised Everyday Items**: - **Knife Umbrella**: This umbrella has a hidden blade inside the handle, so you can quickly draw your weapon for defense when necessary. - **Cane Sword**: A cane that looks like an ordinary cane actually hides a sharp sword inside. It is often used by swordsmen or people who need to carry weapons concealed. 4. **Samurai Sword Concealment**: - **Wakizashi**: Samurai usually wear a wakizashi, which is shorter and easier to hide under the belt. It is used together with the katana. It is both a weapon and a symbol of status. - **Decorative Sheath**: Some sheaths are beautifully designed and can be disguised as ordinary belts or decorations, making the katana difficult to detect. These antique weapons not only show the ingenious design of ancient craftsmen, but also reflect the society's demand for concealed weapons at that time. Of course, the use and carrying of such weapons in modern times are subject to strict legal restrictions, and relevant regulations should be observed when collecting and displaying them.