However, all the possible calligraphic styles of the transitional period in those days were used in Kyoen Kankan: from pure tensho (seal script), through 'korei' (old clerical script) which was early reisho (close to reisho) to reisho with complete hataku (horizontal lines ending in a noticeable triangular tail that were specific to reisho) which is called Happunrei; thereby the process of reihen was revealed.
しかし居延漢簡には純粋な篆書からはじまって、隷書になりかけた初期の隷書である「古隷」、完全な波磔（はたく、隷書独特の大きなはらい）を持つ隷書＝八分隷までこの時代考え得る移行期の書体が全て使用されており、隷変の過程が明らかになった。