some people want to leave big city because of many drawbacks. The first difficulty is pollution, especially in air and noise. Although in recent years, environment is more concerned, it still is polluted even very seriously in some places in cities. In addition, lack of safety is also a problem. It is always hard to control crimes and social evils in a complicated society like in a big city. Furthermore, one other disadvantage is low quality of road infrastructure. Traffic jams at peak hours and flood after heavy rains are inevitable in most of big cities. And the last one is that life in big city is stressful because we always have to be active and motivated in order to catch up with others in competitions for money and fame.

In conclusion, not only in a big city, but wherever we live in, it has advantages and disadvantages. So what we need is learning how to adapt our living environment, have a part in developing strength and reducing weak points of our places.