What is the definition of science fiction movies? What are the similarities?

Science fiction movies refer to movies with unknown or extraordinary plots and special effects with the theme of scientific development. It usually includes imagination and exploration of the future, outer space, time travel, laboratory experiments, and the influence of technology on human society. Science fiction movies generally contain elements such as future technology, artificial intelligence, alien creatures, supernatural phenomena, time travel, virtual world and so on. It breaks through the traditional narrative mode and stimulates the audience's imagination and thinking about the future.

Similarities of science fiction movies are:

1. Unreal plot and special effects processing: Science fiction movies usually use unreal backgrounds such as outer space and the future, as well as various special effects and CGI technologies to express plots and scenes that may not exist in reality.

2. Science and technology exploration: Science fiction movies usually involve the exploration of science and technology, trying to predict the future development direction of science and technology.

3. Thinking and exploration of human beings: Science fiction movies often expand human imagination of the future, explore human psychology and behavior, and reflect on human survival and future development through unknown and transcendental plots.

4. Unique narrative style: Science fiction movies often use imaginative storylines, role settings and complex narrative structures to create unique movie impressions and artistic expressions.

To sum up, science fiction film is a kind of film that shows scientific exploration and unknown future, and constantly opens people's thinking and imagination about the future and mankind, with innovation and imagination that previous films did not have.