Okay kiddo, have you ever played with a toy car that goes really, really fast? Imagine a super cool toy car that can go faster than any other toy car you've ever seen. Now imagine that the car is really, really big and can go even faster than a plane! That's kind of like what a long-range hypersonic weapon is.
But instead of a toy car, it's a real weapon made by some really smart people. Hypersonic means it goes super fast, like faster than a bullet! Long-range just means it can travel really far. So this weapon can travel super fast and super far to its target.
The weapon works kind of like a rocket - it launches into the air and starts going really fast using special engines. But unlike a normal rocket, it can maneuver and change direction while it's flying. This makes it really hard for the enemy to stop it or shoot it down.
Now, don't worry kiddo, this weapon isn't a toy and it's not something to play with. It's very serious and very dangerous. But sometimes, countries need weapons like this to protect themselves from other countries who might want to hurt them.