My hometown was a small town surrounding by green trees. There was a clean river in which fish swim freely. In the town, the house was simple and the street was narrow. People in here hardly worked and their life was poor. But now, the building is very high and there are many factories and stores on the streets. A various of cars drive on the streets. The environment was polluted with the rapid development of industry. The trees is reducing and the fish is disappeared. We need not only the economic progress but also the comfortable environment. So the environment treatment is very ugly task.