Once a match was arranged and sealed, though, a wife's infidelity could be punished with death.
At weddings, for example, gifts are given before or after the actual day, but never on that day.
In feudal Japan the merchant class was looked down as the lowest of the low because they dealt with money.
Often money would be wrapped in fabric before it was exchanged to minimize contact with it.
You give the couple a cash gift at the wedding to fund their honeymoon, but again because of the negative aspect of money it needs to be 'concealed' in an envelope.
Traditional wedding gifts are functional ones - kitchen implements, pots and pans, etc.