2, send shoes between couples, if you want to crack the ominous meaning, then give the other party a dollar, which means that buying this pair of shoes will not have a bad meaning.
3. Because shoes are worn on the feet, when couples give shoes, they will walk apart, which has a bad meaning. Shoes are the same as "evil". But if you really want to send shoes to each other, they can give you a dollar when you send them. It can be said that you bought it yourself, so there is nothing to be ashamed of.