Definitely not a genuine note. I would normally classify any fantasy Chinese note with a ridiculously large value as some kind of "hell money" or "joss paper" - produced to be ceremonially burned at a funeral, to give the deceased valuables in the afterlife. Though with a design directly copying PRC notes, I suspect it wouldn't have been made in mainland China (on pain of death or imprisonment), and I can't see it being made in the Chinese diaspora either. maybe from Hong Kong?
The confirmation is in the Chinese script at the top of the Chinese-characters-side of the note. On genuine 10 yuan notes (example given on top in the image below), there are six characters here, which transliterate to the exact same words that are printed in English letters on the other side, and which translate to "People's Bank of China".
On your note (also given below), there are eight characters there, and these characters translate to "Universal Banking Company Limited". There is no such thing as a banking company for the entire universe, nor anyone claiming to be such. So this is definitely "hell money".

Please note: if you decide not to keep this note, please be aware that it is considered incredibly rude to give "hell money" away to a Chinese person - it is equivalent to saying to them "I wish you were already dead". I had one fellow in my coin club who would routinely give away samples of "Hell Money", but instead of giving them directly to people, he'd put a pile on the table and say "anyone who wants one can take one".
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis