There are many drawbacks when living in the city. In the first place, citizens have to deal with traffic congestion every day. This problem is even worse in the rush hour when so many people run out to work and are stuck on streets for hours. Moreover, ambulance and fire engine sometimes can’t get in time to complete duty, which makes a lot of serious loss Next, high cost of living is also a serious issue in the city, especially in metropolitan cities. More and more people find it difficult to live on their modest salaries when prices are going up all the time. Financial pressure makes city dwellers become constantly stressed and tired. Finally, the polluted air caused by exhaust emissions from millions of vehicles, construction dust and the lack of green trees negatively affects residents’ health. Many people suffer from respiratory problems such as lung cancer, sore throat or asthma. Indeed, city life brings a number of difficulties as well as challenges to its citizens.