Due to the limited job opportunities in the rural areas, most of the villagers choose to leave the village and move to the cities in order to get a better quality of life. As a result, because of the limited capacity of the city - which could not fulfil the needs of unplanned migration from the villagers, it becomes overcrowded. To solve this problem, a certain group of people believe that building a smaller number of high-rise buildings will help. However, others claim that constructing more low-rise buildings could be the better choice to answer this question. As I accept the point of the first idea, I personally agree with the latter statement. This essay will try to explain the ideas.