The final category of stage speech is conventionalized stage speeches ("chengshi nianbai"). These are rigid formulations that mark important transition points. When a character enters for the first time, an "entrance speech" ("shangchang") or "self-introduction speech" ("zi bao jiamen") is given, which includes a prelude poem, a set-the-scene poem, and a prose set-the-scene speech, in that order. The style and structure of each entrance speech is inherited from earlier Yuan Dynasty, Ming Dynasty, folk, and regional forms of Chinese opera. Another conventionalized stage speech is the exit speech, which may take the form of a poem followed by a single spoken line. This speech is usually delivered by a supporting character, and describes his or her present situation and state of mind. Finally, there is the recapitulation speech, in which a character will use prose to recount the story up to that point. These speeches came about as a result of the "zhezixi" tradition of performing only one part of a larger play.