Fisaow is a farmer. He has a large field covered with grass and wants to create some pattern or design in that field by removing grasses at certain places so that it looks like a crop circle from the sky. But he is not familiar with geometric shapes. One day he noticed that when a cow eats grass in the fields, it creates different geometric shapes based on how they are tied in the field.
This is a companion discussion topic for the original entry at https://toph.co/p/alien-invasion