Hai Chung Luong is currently a Ph.D. candidate in Mechanical Engineering at the School of Mechanical Engineering, Hanoi University of Science and Technology, Vietnam. Since 2011, he has been a lecturer at Vinh University of Technology Education, where he teaches Manufacturing Engineering. His research interests include metal cutting processes, particularly milling and grinding, machining parameter optimization, high-speed machining, surface integrity, machining accuracy, and advanced manufacturing of difficult-to-cut materials such as titanium alloys, tool steels (9XC, SKD11, SKD61), and nickel-based alloys. His current research also focuses on CNC machining strategies, toolpath optimization, and intelligent process planning for improving machining efficiency, surface quality, and tool life. Keywords: Metal Cutting; Milling; Grinding; Precision Machining; High-Speed Machining; Surface Integrity; Surface Roughness; Tool Wear; Tool Life; Machining Accuracy; Process Optimization; Toolpath Optimization; CNC Programming; CAM; Difficult-to-Cut Materials; Titanium Alloys; Nickel-Based Superalloys; Hardened Tool Steels; Intelligent Manufacturing; AI for Manufacturing.