Introduction to corporate squares: The "four major squares" represented by the square in front of the First Tractor Factory serve as the central axis of the prominent buildings. They are laid out symmetrically and connected in a line, forming a 5.6-kilometer-long "socialist industrial architectural landscape" "Belt", majestic, majestic and rare in the world, is the most typical representative of the industrial heritage of Eastern socialist countries and has obvious world historical significance.