The blocks, mobs and chests that appear from the block that is regenerated will depend on the phase you are in.
You will start in a single block, but if you break it another one will appear, and then another, and then another… and so on to infinity! but every time you chop a certain number of blocks, you will change phase. Probably the most famous map in the entire Minecraft community, and created by ToramTyces for Bedrock. This is the OFFICIAL Minecraft app in a block for Minecraft Bedrock Edition version 1.17!
IMPORTANT: This application installs the Minecraft map in a block, but for this you must have the "Minecraft Bedrock Edition" game installed on your device.