Nit: you cannot see the Great Wall from space unaided: https://www.nasa.gov/vision/space/workinginspace/great_wall.html https://www.nasa.gov/vision/space/workin

Nit: you cannot see the Great Wall from space unaided: https://www.nasa.gov/vision/space/workinginspace/great_wall.html https://www.nasa.gov/vision/space/workinginspace/great_wall....