China loves lucky number 8.
I was in a casino once in Vancouver watching a busy roulette table, and number 8 had lots of chips on it. While watching the number 8 came up three times in a row, and each time it came up people put more chips on it. Three of the same number in a row on a roulette table is pretty rare. Only after I learned why the people had been betting so heavily on 8 in the first place. Anyone who had bet on 8 for all three spins, and increased the bet along the way, could have made bank. The return is 35x the bet on a single number hitting. A $100 bet turns into $10,500 if your number hits three in a row.