One: first of all, I'll install a B for everyone to popularize science. CNC is called computer gong in the south, and it is also a processing center. CNC is a tall name (English abbreviations seem to be abusive). To sum up: CNC= processing Chinese and western = computer Gong = messy names everywhere. Two: UG is a very powerful software. It is very powerful in modeling design, drawing design, numerical control programming, molds, electrodes, ships and automobiles. The UG programming you mentioned is the programming in the processing module. Then the problem is coming. The NC programming you mentioned is all kinds of G codes used by machine tools to process products. G codes are all the same. But there are many softwares for programming, just like C++ and assembly C language. Hypemill is used to program multi-axis machine tools. Powermill, Catia and many UGs are also a very powerful software. That's the end of pretending to be B. Thank you.