The star at the top of the Christmas tree is called the "Star of Bethlehem", which is the most distinctive symbol in the decoration of the Christmas tree, symbolizing the supernova in the sky when Jesus was born, revealing the place where Jesus was born, symbolizing the redemption of Jesus, the glory of Christ and the eternal hope of mankind. Putting gifts under the Christmas tree originated from the legend that the three doctors presented gifts to the baby Jesus, symbolizing that people should give the most precious things in life to Christ.
The common bells on Christmas trees are based on the bells in the hands of shepherds. When the shepherd shakes it, the lost sheep can find their own voice and return to the shepherd, which means that the lost people have found God and a good shepherd. The bell not only means to announce the birth of Christianity (the arrival of the savior), but also means to drive away evil souls.
Zhong means to announce the birth of Christianity, from heaven. Some people also use bells to make people return to their senses without getting lost.