Why are there so many China people in the sci-fi American TV series Firefly?

"In the story setting of the American TV series Firefly, Chinese and English are the world's common languages. As two big countries, China and the United States jointly dominate space immigration, which seems to be the predecessor of the alliance. Therefore, the official languages of the alliance are Chinese and English, and the beliefs are Christianity and Buddhism. "

The following is pure spit:

Firefly is a great sci-fi movie because it predicted the future world pattern of China-US co-governance (G2) 30 years in advance. The story background of Firefly is directly borrowed from the American Civil War, so, you know. ...