How can you destroy all blocks in Minecraft pe?

How can you destroy all blocks in Minecraft pe?

How to destroy all blocks?

All blocks around the world? All blocks of what?

In my opinion that would work best with the / fill command, simply the coordinates from where to where the block should be replaced and finally convert all blocks into air

/ fill [first coordinates] [second coordinates] air

Be careful there's a limit to blocks that can be replaced hope it will help you