What kind of psychology does an actor have when acting?

Laughter field is a proper term, also called spray field. It means that the actor did not break away from the plot and characters in the performance, which destroyed the seriousness and realism of the stage art. The punchline means that when performing, he spoke his lines seriously, and the actor was amused by himself and couldn't help laughing. It was a slap in the face, and everything had to be overturned. Laughter was originally an actor's mistake in the rehearsal process, but later some films, especially comedies, made these laughter clips into a set tidbit and broadcast them at the end of the film, adding a different kind of laughter and flavor to the film.