if you know chinese you know Zhen jiu (Acupunture)  means Needle and Moxa. so any needle is call zhen. in acupuncture ,we have ashi point. that means the point when you feeling hurt or  the most senstive by tough.so from the point or the tool use ,dry needle is party of the zhen jiu (acupunture? . they steal the idea from anient  chinese book, that is call a iloation a infringement of intellectual property rights .