Prof. Dr. Dan Song of the College of Materials Science and Engineering, Hohai University, China, is also a Postdoctoral fellow at the College of Materials Science and Engineering, Southeast University, China. He visited North Carolina State University in the United States (sponsored by the state) for the Six Talent Peak Programs of Jiangsu Province and the "Vice President of Science and Technology" of the Mass Entrepreneurship Program of Jiangsu Province. His research interests include high-performance ultra-fine/nano metal materials, material corrosion and protection, material surface engineering, and corrosion and control of steel bars in concrete.