Refers to a semi-public performance after rehearsal and synthesis but before the official performance.

Inspect performance effects and strengthen cooperation between various working groups. Find and modify blind spots in the performance, refine the process and record key points, and the formal performance will be smoother. Industry insiders and media people will be invited to the preview to observe and provide some opinions on arrangements, music, lines, character logic, etc. from a professional perspective.

Musical theater evolved from comic operas and operettas (or "operettas"). It was called "musical comedy" in the early days, and later simply called "musical theater". It was developed at the end of the 19th century An opera genre that originated in England, it is a dramatic form that combines dialogue and singing. The musical combines drama, music, singing and dancing, and is full of humor and comedy. Its music is easy to understand and therefore very popular with the public.