Give the newlyweds two lanterns to increase their luck, not only because "light" and "ding" are homophonic, but also because good things overlap, so the newlyweds must give even numbers of lanterns. Sending lanterns is to wish my daughter good luck after marriage, and sending lanterns is to wish her a safe pregnancy.
Hang lanterns, even numbers. In the first year of marriage, hang lanterns at the door to welcome the new year. You need to hang one on the left and right, and you can't hang an odd number, which means the married life of husband and wife.