Write your name on the back of the red envelope, usually on the seal. This not only ensures the integrity of the red envelope, but also allows the recipient to know who gave it.

Write horizontally: You can write "XXX (name) presents", or "XXX (name) respectfully presents".

Writing vertically: You can write in the lower left corner or lower right corner of the red envelope, and write "XXX (name) presents" or "XXX (name) respectfully presents".

If it is a more formal occasion, such as a wedding or birthday party, you can write blessings such as "Congratulations to XXX (name of the newlyweds), happy wedding", "Happy birthday to XXX (name of the birthday girl)" and other blessings.