Hard rime is like frost that forms on trees when it gets really cold outside. But instead of being soft and powdery, it's hard and crunchy like ice. This happens when tiny water droplets in the air freeze instantly when they touch something cold, like the branches of a tree.
Think of it like putting a popsicle in the freezer. The cold air freezes the liquid in the popsicle into a solid chunk of ice. That's kind of what happens with hard rime. The cold air freezes the tiny droplets of water into hard ice crystals.
People like to look at hard rime because it can be really beautiful. It looks like the tree branches are covered in millions of tiny crystals. But it can also be dangerous because the ice crystals can break off and fall, which can cause damage or hurt someone. So it's important to be careful when there's hard rime outside.