The Christmas tree first appeared on the Saturnalia in mid-December in ancient Rome. The German missionary Nichols used a vertical tree to enshrine the Holy Child in the 8th century AD. Subsequently, the Germans took December 24 as the festival of Adam and Eve, and placed the "paradise tree" symbolizing the Garden of Eden at home, hanging cookies representing the holy bread, symbolizing atonement, and lighting candles, symbolizing Christ. In the 16th century, the religious reformer Martin Luther, in order to obtain a starry Christmas night, designed a Christmas tree with candles in his home. However, there is another popular saying about the origin of the Christmas tree in the West: a kind-hearted farmer warmly entertained a stray child on Christmas Day. When parting, the child broke off a branch and stuck it on the ground. The branches immediately grew into a big tree, and the child pointed to the tree and said to the farmer that every year today, the tree is filled with gifts to repay your kindness. Therefore, the Christmas tree that people see today is always full of small gifts.