Xi'an Hi-tech Industries Development zone went home with seven projects with a total investment of 88.1 billion yuan ($13.9 billion) at the signing ceremony for key projects of Xi'an city on May 12.

The projects cover fields of education, health services, aviation and characteristic towns.

Two of the projects received investments from foreign capitals, reaching an investment of $200 million.

The national development zone will join hands with the Zhejiang Loong Airlines and China West Airport Group on a "Belt and Road airlines" project.

With a total investment of 10 billion yuan, the project is to step up the construction of Xi'an as a national central city of China by building the Xi'an Xianyang International Airport into an international transport corridor and international airline hub.