Hua Zhibing enrolled in Tsinghua University, what exactly is a virtual digital person?

Recently, Hua Zhibing, a virtual student of Tsinghua University, has been on the hot search, and netizens have asked questions: Is Hua Zhibing a real person? Does Hua Zhibing have an entity? In fact, Hua Zhibing is a virtual digital person. All living things on the earth are carbon-based creatures, but virtual digital humans are a leap from carbon-based civilization to silicon-based civilization.