What is the meaning of the phrase "out of the general" and "into the minister" in the Beijing Opera scene?

It refers to the fact that there are two doors on the left and right sides of the stage where a play (Peking Opera mainly) is performed, and on the beam of one door is written the words "出将", and on the beam of the other door is written the words "入相". When the play begins to be performed and the sound of gongs and drums is heard, the actors come out from the door of the "generals"; after the play is finished, the actors go back from the door of the "ministers".

The names of "out of the general" and "into the phase" are the names of "on the stage" and "off the stage" on the theater stage, which are borrowed here from "the general" and "into the phase". Here, the word "general" and "prime minister" are borrowed to mean the hope of becoming a great man. The name of the "generals" and "prime ministers" is borrowed here to mean "generals" and "prime ministers".