Prof. Dr. Hongyao Shen is an Associate Professor at the School of Mechanical Engineering, Zhejiang University. He received his bachelor’s degree (Mechanical Engineering and Automation) and Ph.D. (Mechanical Manufacturing and Automation) from Zhejiang University in 2005 and 2010, respectively. He completed his postdoctoral studies at the University of British Columbia and Zhejiang University in 2012. His research topics include 3D printing, trajectory generation in 3–5 axes machining, tool path generation for complex surfaces, SLM-based magnesium alloy additive manufacturing, and additive and subtractive hybrid manufacturing technology.