Prologue 1

Virtual reality (VR) is a field of highly cross-integrated scientific and technical disciplines. It is the latest realm of human achievement toward simulating a real-world environment, with the development of technologies such as high-performance computing, computer graphics, and human–computer interaction. VR has been widely used across various scenarios and offers enormous social and economic benefits.

In the field of mass consumption, VR technologies have been applied in videos, games, tourism, e-commerce, and virtual social networking. They can create a new, immersive, interactive atmosphere and introduce a new sensory experience to users. On October 1, 2019, the military parade celebrating the 70th anniversary of the founding ...

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