 Secondly, it collects more than 26,000 characters with a huge proportion of variant characters.Many of these variants are not recorded in any other works.The characters in it are divided, in terms of orthography, into "standard" (正 "zheng"), "vulgar" (俗 "su"), "contemporary" (今 "jin"), "archaic" (古 "gu") and "alternative" (或作 "huozuo"), a classification more elaborated than that used in "Ganlu Zishu".