Microfilm is microfilm, also called lithography. It refers to a movie that can spread for several minutes to 60 minutes through the new media platform on the Internet, is suitable for viewing in the mobile state and short-term leisure state, and has a "micro (ultra-short) time" (several minutes to 60 minutes) screening, "micro (ultra-short) periodic production (7- 15 days or weeks)" and "micro" complete story.