As early as 2,200 years ago, goods, culture and population traveled through routes that connected ancient China and Mediterranean countries, and these routes later became known as the Silk Roads. based on the concept of the ancient Silk Road, China’s President Xi Jinping first proposed Belt and Road Initiative (BRI) in 2013. BRI (the contemporary silk road) combines two initiatives: The Silk Road Economic Belt (land based), and The 21st Century Maritime Silk Road. Facts have shown that the “Belt and Road Initiative” has become the world’s widest and largest international cooperation platform. Since the core of BRI's development lies in the economic and trade exchanges between the China and world, the construction or strengthening of related transportation networks and the development of domestic and foreign free trade zones (which can also be regarded as one of the node types of BRI's transportation network) are the most important one of the investment directions.