Okay kiddo, so bukhari is a special kind of heater that is used in some countries when it gets really cold, especially during the winter. It looks kind of like a big pot with a pipe sticking out of the top.
The way it works is, you put some special kind of fuel, like charcoal or wood, inside the pot part, and light it with a match. The fire makes the pot get really hot, and then the heat travels up the pipe and into the room.
People like bukhari because they're really good at keeping a room warm, even if it's really cold outside. Plus, they don't need electricity, so they can still be used even if the power goes out.
But it's important to be safe when using a bukhari. You should only use it in a room with good ventilation, so that you don't breathe in any harmful fumes. And you should never leave it unattended, because it's still a fire and could be dangerous if not used carefully.