Yes, the Christmas tree is pagan. The use of evergreen trees, wreaths, and garlands to symbolize eternal life was a custom of the ancient Egyptians, Chinese, and Hebrews. Tree worship was common among the pagan Europeans, even surviving their conversion to Christianity.
Merry Christmas in Chinese! The first two characters mean Christmas. But if you translate them directly the two words mean "Holy Birth." The second two characters mean "Happy" or "Merry." They are pronounced: Shung Dahn Kwii Luh!