The "Proposal" of the Fifth Plenary Session of the 18th CPC Central Committee proposed that we should accurately grasp the profound changes in the connotation of the period of strategic opportunities, and change from the original opportunity of accelerating development to the opportunity of accelerating the transformation of economic development mode. From "speed opportunity" to "transformation opportunity", the "Thirteenth Five-Year Plan" period is welcoming new opportunities to deeply adjust the structure, revitalize the real economy and promote the historical transformation of the economic development mode. During the Twelfth Five-Year Plan period, China's economy was "fast" and "good", and its growth rate was among the highest in the world. Structural adjustment continued to advance and development vitality was enhanced. At the same time, however, the world pattern has been profoundly adjusted after the financial crisis, and the international power balance has undergone tremendous changes. The major economies under the "European debt haze" all showed "mediocre growth". External demand has obviously slowed down, while domestic demand is facing the "three-phase superposition" of the shift period of growth, the painful period of structural adjustment and the digestive period of the previous stimulus policy, which is both bad news and good news. Entering the new normal, China's economy needs to change and transform from fast to good, relying more on endogenous power to achieve development and more on expanding domestic demand to drive growth. Expansion needs to rely on investment and consumption. Vast space and great potential are not empty words. China's high-speed rail shines brilliantly on the world stage, while the total mileage of domestic railways is only about1.2000 km, much less than that of the United States, and the "Iron Gong Ji" in the midwest is even more short-board. For another example, although the urbanization rate is nearly 55%, the urbanization rate of registered population is only about 36%, and there is still a lot of room to digest excess capacity. Eliminate regional differences and urban-rural differences, and share a well-off society in an all-round way, and effective investment will increase exponentially.