Movie easter eggs mean little surprises that come with the movie. An Easter egg is usually a short video that appears at the end of the movie after the end of the movie. The ending Easter egg is usually a foreshadowing for the sequel. The most representative one is the Marvel series, which is basically an ending Easter egg every time. Another type of easter egg is the character easter egg. Usually the film company will invite some famous actors to appear in the film as guest stars without the audience knowing, giving the audience unexpected surprises.

A theater is a public place where movies are shown for audiences. It is an entertainment service place. Audiences need to abide by necessary personal behavior standards there. The main component of the theater is the auditorium. The scale of cinemas can be divided into five categories, ranging from extra-large to VIP types. The development of cinemas has gone through four generations, from old-fashioned cinemas to the current commercial complex. In China, theaters need to join a specific theater chain before they can show it.

The quality of the auditory auditory conditions in the auditorium depends not only on the electroacoustic quality of the sound return system, but also on the architectural acoustic quality of the auditorium.

The cinema auditorium has its own acoustic characteristics, which are different from other performance buildings:

1. The sound source position is fixed. The speakers in theaters are usually placed behind the screen or on the side walls, so the sound source position is fixed;

2. The sound source position is higher. The tweeter head of the speaker is generally located at 2/3 of the height of the screen, which is conducive to evenly radiating sound energy to all directions of the auditorium and the back seats.

3. The volume can be adjusted as needed. In principle, the power of the sound reproduction system is not limited, so the direct sound can be the main one.