If you sign, you usually write the name of the couple or the name of the couple's parents. In addition, some families will also print the names of grandparents. When writing an invitation, you should generally pay attention to your identity, head and title.
Generally, the format of wedding gift red envelopes is vertical, with the name of the recipient (usually the name of the newlyweds) written on the upper right, the congratulatory message written in the middle, and the signature written on the lower left, that is, the name of the sender.