There are far fewer Genshin Impact character birthdays in February 2023 than in other certain months, like June or July. However, a few beloved heroes of Teyvat celebrate the day they arrived during the second month of the year. Much like people in real life, these characters commemorate their birthdays, but, funnily enough, it is always the player that actually receives a present. On their birthday, they send the Traveler a letter with a few gifts attached.

https://screenrant.com/genshin-impact-character-birthday-february-2023-date-gift/