It is obvious that people endow numbers with a kind of mystery and reckon that they can infulence weal and woe（禍福）.Indeed this is a suspicion,but as it is in grain（根深蒂固）,until today many people still believe in it.
It is interseting that foreigners don't care about numbers or dates which we Chinese like or not,but we may have completely opposite idea about those foreigners like or not.So it is interesting to make some comparison in such aspects.