Mach 1 was equivalent to 1224 kilometers per hour. Mach was a measure of speed. One Mach was one time the speed of sound. The speed of sound under standard atmospheric pressure and standard temperature was about 340 meters per second, which was 1224 kilometers per hour. Therefore, Mach 1 was equivalent to 1224 kilometers per hour.
Blade Fangs was a Japanese manga created by Itagaki Keisuke. There were four works in total, namely Grappler Blade Fangs, Fanma Blade Fangs, Blade Fangs Path, and Blade Fangs Path 2. The theme of this manga was hand-to-hand combat, and it told the story of the young Blade Fang fighting with strong enemies in various underground arena competitions. The characters in the Blade Fangs series had distinct personalities, compact storylines, and unique styles. This series of comics was well-known in China and was welcomed and loved. The animated version of Blade Fangs also had two seasons and could be watched online. As for the viewing order of Blade Fangs, they could be viewed in the order of Blade Fangs 1, Blade Fangs 2, Fanma Blade Fangs, Blade Fangs Path, and Blade Fangs Path 2.
Extreme speed and rapid speed both referred to the concept of speed, but they were different in degree. Extreme speed referred to the highest speed or extremely fast speed, reaching the limit of speed. And rapid speed referred to extremely fast speed, usually used in emergency situations. In terms of speed, Extreme Speed was faster than Rapid Speed. Fast speed also referred to extremely fast speed, which was similar to rapid speed. In summary, extreme speed was the fastest, and the speed of extreme speed and extreme speed was relatively faster.