In order to commemorate the birth of Jesus, later generations designated1February 25th as Christmas and celebrated the birth of Jesus with annual mass.
There is a story about the birth of Jesus. It is said that Jesus was conceived by the Holy Spirit and was born of the Virgin Mary. God even sent the angel Gabriel to Yue Se in his dream, telling him not to abandon Maria just because she was unmarried and pregnant, but to marry her and name the child "Jesus", which means to save people from sin.
In order to commemorate the birth of Jesus, later generations designated1February 25th as Christmas, and held mass every year to commemorate the birth of Jesus.