Okay kiddo, have you ever seen a sailboat before? The sails on the boat help it move through the water when the wind blows. The junk rig is a special type of sailboat rigging that uses square sails instead of triangular sails like most sailboats.
When you look at a junk rig, it might seem like there is cloth hanging from the mast in a bunch of squares, like a checkerboard. The sails are made of a bunch of smaller panels that make the larger square shape.
Each panel is attached to a long piece of rope, which is called a "yard," that goes across the top of the sail. This helps to keep the sail in the right shape when it catches the wind.
Another thing that makes junk rigs special is the way they can be adapted easily for different wind conditions. If the wind is light, the sailors can reduce the size of the sails by rolling up some of the panels. Then, when the wind picks up, they can let those panels back out to catch more wind and make the boat go faster.
One of the advantages of using a junk rig is that it is easy to handle. Since there are fewer ropes and lines to manage, it makes it easier for sailors to control the boat. The rig can also be dropped quickly in case of an emergency or storm.
So that's the gist of it, little one. Just remember, the junk rig is a type of sailboat rigging that uses square sails and is easy to handle and adapt to different wind conditions.