Why can Santa's reindeer fly?

It is a legend that Santa Claus's deer can fly.

It is said that Santa Claus is the most popular figure in Christmas activities. It is said that he will visit thousands of families on Christmas Eve in a sleigh pulled by nine reindeer and give beautiful gifts to the children.

The nine reindeer pulling the sleigh for Santa Claus all have their own names: Lasher, Dancer, Rejoice, Bitch, Comet, Cupid, Big Man, Lightning and Rudolph with Red Nose. Rudolph with a red nose leads the way, and his bright nose penetrates the fog like a lighthouse. No matter what kind of rain, snow, wind and frost they encounter, they can't stop their progress.

Extended data:

Santa Claus Nicholas was born between the third and fourth centuries. He is a devout believer of a wealthy family in Asia Minor, and his name is Nicholas. He was determined to serve God all his life since he was a child, and when he grew up, he became a bishop in Myra (located in present-day Turkey) near the Mediterranean Sea.

Nicholas is conscientious and helpful. It is said that he often helps the poor and widows. After his death, the Greek Orthodox Church regarded him as a saint. Nicholas was later regarded as a saint to protect children and the poor in Roman Catholic areas. ?

Nicholas is called Santa Claus in Britain. Later, the legend of Nicholas came to America with Dutch Christians. Dutch Christians nicknamed Nicholas Sinterklaas, but later it was gradually mistaken for Santa Claus by locals who didn't know Dutch, so this mistake has been kept to this day.

It was not until 1882 that the American poet Dr. Clement Clark Moore described Santa Claus as a kind and lovely image for the first time: his cheeks were like roses, his nose was like cherries, and he had a long white beard. Before Christmas, he happily drove the reindeer sleigh to the villages and towns, climbed down the chimneys of various houses and gave gifts to the good children.