At first I thought money laundering (keeping transactions below $10k), then I thought maybe there is something to it meaning or representing wealth in China sort of like a lucky number...now I’m just under the impression it’s got to be a meme - like the egg meme as it relates to crypto - coming from telegram/discord channels.
https://en.wikipedia.org/wiki/Fourteen_Words
I'm not into cryptocurrency enough to have any idea of whether that's the real origin.
8 is their favorite number.