In this case, the red envelope format can be written vertically or horizontally.

1. Vertical writing format: "Congratulations" and other words are located in the upper right corner of the red envelope, with the names of the bride and groom immediately below it; blessing sentences are written in the middle, such as "A happy marriage for a hundred years, and we will be united forever" etc.; The lower left corner is the signature area, indicating the name of the gift giver and a message of congratulations.

2. Horizontal writing format: write the name of the couple in the upper left corner of the red envelope, center the blessing sentence, and finally sign and write "congratulations" and other congratulatory words in the lower right corner of the red envelope.