It can also be called: 1 month 1 day, born in Zhang Yidan, and called Yidan on New Year's Day. The name is easy to remember and listen to.
The boy's word is called: Reason: Ber Ber is homophonic, taking his mother's surname Li, so it is called Dawn, which means that a new day has just begun. Your child was born on 1 month 1 day, just at the beginning of the new year.
It can also be called Zhang Lixin: Li Tongyin explains ditto, and the new year is New Year. Because she was born on 1 month 1 day.