Northwestern Polytechnical University (NPU) is located in ancient capital city of Xi’an. NPU is a research-oriented, multi-disciplinary, and international university of science and technology, which simultaneously excels at aeronautics, astronautics, and marine technology. NPU is the key university in the national 985 Project and 211 Project. The university is affiliated with the Ministry of Industry and Information Technology and is a member of “Outstanding University Alliance” in China.