Uhhh.. WRONG lol.
Daoism was the 'religion' for a lot of china, and confucianism was a philosophy, under buddhist religion.
they did it so that they could represent the buddhist side of china (the majority including the imperial courts) and how chinese took buddhism and added onto it greatly with things like feng shui and local culture (lot of 'buddhist' gods in japan are actually not buddhist origin but daoist or even shinto origin)
Confucianism is like..... Capitalism basically, in real terms. A philosophy on governance, economics, and ethics. A lot to do with behavior, management, etc.
It was a philosophy held high in northern/central china for hundreds of years, especially after Han Empire, but I think the 'confucianism' represented in this game, is just a arbitrarily flavourful name being slapped on what is essentially, 'china's take on buddhism' kind of like japanese shinto is 'japans take on chinese take on buddhism'