Western numerology's luck claims trace mostly to symbolic associations built up over the twentieth century — 7 as a number tied to mystery and completeness, 3 to creative flow, 9 to a sense of culmination. None of it claims to be more than symbolic.
Separately, Chinese numerological tradition assigns luck based on phonetics: the number 8 sounds close to the word for prosperity in Mandarin and Cantonese, and 6 sounds close to a word associated with smoothness or flow. These associations are linguistic, not calculation-based, and they're a genuinely different tradition from Western digit-reduction numerology, even though English-language content sometimes blends the two together.
