A blindfolded child walks on a rope through a factory yard

Hey guys, let's go out and have a look around. Eh, look at the modern era, friends, there are more and more factory buildings. Which of course creates waste that can pollute the environment, one of which pollutes the air because of the smoke produced from the manufacturing process in the factory. Trees should be planted in the factory area so that the dirty air that comes out can be sucked in by the trees and exchanged for fresh air produced by the trees.