Is there a difference between a virtual studio and a blue box studio? If yes, please elaborate. Thank you.

Virtual studio is a unique TV program production technology developed in recent years. Its essence is to digitally synthesize the virtual three-dimensional scene made by computer and the moving images of characters shot by TV cameras in real time, so that the characters and the virtual background change synchronously, so as to realize the seamless integration of the two and obtain a perfect synthetic picture.

The so-called "blue box" is a digital studio. The ceiling, floor and walls of the shooting area were painted with blue paint, and the actors seemed to be put into a big blue box.