Character development of Hanja can be traced further back then when the use in Korea had begun. Hanja uses traditional characters that came before the invention of simplified characters. Even before the creation of simplified characters, hanja was already losing ground to the newly invented Hangul system. Hanja is rarely used today, which could be used as an explanation as to why Hanja did not have the chance to adapt to simplified characters. However, this also brings up the discussion of whether or not Hanja should still be in use today or not.