Topopolis

Okay, first let's define what "topopolis" is. Topopolis is not a common term, so I'm assuming you mean "topology" and "metropolis" combined together. Topology is a branch of mathematics that studies how shapes and spaces are connected, while a metropolis is a big city with lots of people and buildings.

So, let's pretend you have a bunch of toys, like blocks and balls, and you want to put them together in different ways. You might connect some blocks to make a tower, or put some balls inside a box. That's kind of like what topology is all about - figuring out how different shapes can be put together and connected in different ways.

Now, let's say you have a lot of people and buildings in one place - that's a metropolis. In a big city, there are lots of different neighborhoods, each with its own unique features. Some areas might have lots of tall buildings, while others might have lots of parks and green spaces.

If you combine topology and metropolis, you might get something like topopolis - a city where the layout and structure is based on topological principles. For example, you might have neighborhoods where all the buildings are connected in a certain way, or streets that form intricate geometric shapes.

So, to sum it up: topopolis is a made-up word that combines topology (studying how shapes and spaces are connected) and metropolis (a big city with lots of people and buildings) to create a city that's designed based on topological principles.