Part/dialogue/lines/lines are what the characters say in the drama performance. It is the main means for playwrights to express plots, portray characters and embody themes. It is also a basic part of the script. The lines of early drama scripts in the world are all poetic. /kloc-in the 0/7th century, prose lines began to establish a stable position in comedy scripts; /kloc-in the 0 th and 8 th centuries, sad lines gradually used prose; /kloc-After the mid-9th century, prose finally replaced poetry as the basic form of script lines.