From Hu Huanyong Line to Mid-Spine Belt of Beautiful China: Breakthrough in Scientific Cognition and Change in Development Mode

How to develop the west of China and how to balance the development between the east and the west of China is a longstanding topic. More than 80 years ago, Mr. Hu Huanyong researched population distribution and agricultural regional development based on China's traditional agriculture and the sharp contradiction between 450 million people and arable land at that time. Today, what we call the development of the west is by no means the issue of the traditional agricultural planting industry, but the issue of how to put forward new business forms and new high-quality developments that are suitable to the western region under the national conditions of the new era. This study combines Hu Huanyong Line with Mid-Spine Belt of Beautiful China (MSBBC) and expounds different themes under different times background. Hu Huanyong Line is a reflection of the characteristics of the sudden change of population density dividing line in modern China as a traditional agricultural country. MSBBC is the strategic need of the new land space planning with high-quality development in the contemporary new era, and is the strategic move to reduce the imbalance of development between the east half and the west half. The study puts forward the following suggestions: (1) Taking the MSBBC as the pioneer and demonstration belt of new infrastructure construction; (2) Taking the MSBBC as an important part of the unified and differentiated strategic planning for constructing a new developing pattern; (3) Building the MSBBC into a hub channel of internal and external circulation; (4) Building the MSBBC into an ecological security barrier belt, a national defense security belt, and a new livable living area; (5) Constructing the MSBBC into a new type of urbanization development mode; (6) Connecting the development strategy of the MSBBC with other national strategies to help realize the dream of Chinese rejuvenation.