门(門):■,这个符号大概在秦汉之际已经出现,从篆书“門”开始解散字形,作“■”(罗21),再经过简省笔画,作“■”(居311.33A),进一步简省为■(居325.14),最后形成固定用法“■”(居延汉395.10)。我们可以清楚地看到篆书字形解散、省笔、连笔快写至草书符号形成的完整过程。其作为独体字时可以写作■。在与其他部件组 The door (door): ■, this symbol probably appeared on the occasion of the Qin and Han dynasties, from the seal “door” began to dissolve the glyph for “■ ” (Luo 21), and then through simple strokes, “(Habitat 311.33A), further abbreviated as ■ (Habitat 325.14), and finally form a fixed usage ” ■ "(Ju Yanhan 395.10). We can clearly see the seal font dissolution, the provincial pen, even the pen to the cursive symbol of the formation of a complete process. It can be written as a single character. In the group with other components