As China undergoes rapid urbanization, excessive urban expansion brings with it problems such as overcrowding, housing shortages, environmental pollution and other "urban diseases," which inconvenience people's lives and reduce their sense of happiness. China has decided to adopt new development ideas to cure "urban diseases." Prominent issues related to "urban diseases" will be seriously tackled to continuously enhance environmental quality, people's living standards and cities' competitiveness so as to build harmonious, habitable, thriving, unique and modernized cities.