The origin of Christmas:

It is said that Jesus was born of the Virgin Mary by Maria. God sent messenger Gabriel to Joseph in his dream, asking him not to leave her because he was unmarried.?

Instead, he wanted to marry her and name the child "Jesus", meaning that he wanted to save the people from sin.

When Maria was about to give birth, the Rome government ordered that all the people in Bethlehem must declare their domicile. Joseph and Maria had to obey.?

When they arrived at the time of the day, the sky was fainting, but two people could not find a hotel to cross the lodge. Just then, Jesus was about to be born.?

So Maria only gave birth to Jesus on the manger. In order to commemorate the birth of Jesus, The following generations set December 25 as Christmas, and celebrated the birth of Jesus with annual mass.

Translation:

It is said that Jesus is the virgin Mary born of Mary. Gabriel, the messenger, was sent to Yue Se in a dream to tell him not to let Mary get pregnant because she was unmarried.

on the contrary, he wants to marry her and name the child "Jesus", which means he wants to save the people from evil. When Maria was about to be born, the Roman government ordered all people in Bethlehem to declare their residence.

Joseph and Maria had to obey. When they arrived, the sky was faint, but they couldn't find a hotel to spend the cabin. At that time, Jesus was about to be born.

So Mary only gave birth to Jesus in a manger. In order to commemorate the birth of Jesus, later generations designated December 25th as Christmas, and held mass every year to celebrate the birth of Jesus.

Extended information:

The Christmas tree is one of the most famous traditions in Christmas celebrations. Usually people take evergreen plants, such as pine trees, to the Christmas tree house or outdoors and decorate it with Christmas lights and colorful decorations.

put an angel or a star on the top of the tree. An evergreen tree decorated with Chinese fir or pine trees as part of Christmas celebrations. The Christmas tree originated in Germany.

a long time ago, pagans decorated their houses with evergreen branches, which meant after the cold winter, through the cycle of life. In the sixteenth century, Germans began to decorate their homes with evergreen trees. By the end of 19th century, European immigrants brought Christmas trees to American colonies and spread them all over the world.

Baidu encyclopedia-Christmas