The Chinese characters used in modern Japanese (called Kanji characters) have also undergone simplification, but generally to a lesser extent than with simplified Chinese. It is worth mentioning that Japan's writing system utilizes a reduced number of Chinese characters in daily use, resulting partly from the Japanese language reforms; thus, a number of complex characters are written phonetically. Reconciling these different character sets in Unicode became part of the controversial process of Han unification. Not surprisingly, some of the Chinese characters used in Japan are neither 'traditional' nor 'simplified'. In this case, these characters cannot be found in traditional/simplified Chinese dictionaries.