By Ying Chen Last summer, when I was done from my graphic design class, walking down to the hallway, I heard people laughing loudly, with "Wow" sound all the time. It sounded like aliens just landed here. I ran there quickly and found people are playing with VR. It didn't seem very complicated, a person wearing a headset that connected with a PC through many cables. In the hands, the person held two remote controls. It was hard to tell what the person exactly saw or heard from the headset, but...