A silent film (or a silent film or mime) is a film without any dubbing _ soundtrack or sound and picture harmony. Silent film technology was invented around 1860, but during the period from 1880 to 1900, when the production of single-volume movies became easy, silent film was still a novelty. The idea of combining movie images with sounds was born almost with the movie itself; However, due to technical difficulties, most films were silent films before the end of 1920s. However, the images of silent films are equivalent to the common language; The silent film era is also called "the screen age". History of Development Among scholars and historians who study movies, the era when movies have no sound is called the silent era. Before the silent film was gradually replaced by the audio film, the film art had reached the stage of perfection; Many fans believe that with the sound of movies, the aesthetic value of movies disappears. The visual quality of silent films is very high in many cases (especially in the 1960s+0920s), but later, many people use secondary or tertiary tapes to reproduce the damaged materials, and their mistakes include too fast or too slow speed and inappropriate music. Many people mistakenly thought that the production technology at that time was only elementary, and even thought that watching those movies was unacceptable by today's standards.