. Generating Martial Power (Jin) Dr. Yang, Jwing-Ming - March 00, 0000 Jin, or Martial Power, can generally be divided into three categories: Hard Jin, Soft-Hard Jin and Soft Jin. Among these, Hard Jin uses the most muscular power, followed by Soft-Hard Jin and finally Soft Jin. Generating Martial Power (Jin) Dr. Yang, Jwing-Ming - March 00, 0000 Jin, or Martial Power, can generally be divided into three categories: Hard Jin, Soft-Hard Jin and Soft Jin. Among these, Hard Jin uses the most muscular power, followed by Soft-Hard Jin and finally Soft Jin. 