Caishen

As a Chinese I can be 100% sure no one would use this name in China. It's like naming your kid Money or Cash. Technically there used to be some names with the similar ideology of wishing for fortune, but I don't think traditionally Chinese would refer to the god itself in a name, let alone use the character for "god" directly. Nowadays there may be some dimunitive forms of names of gods in use but this one would still be way too direct.