The Lantern Festival falls on the 15th day of the 1st lunar month, usually in February orMarch in the Gregorian calendar. As early as the Western Han Dynasty (206 BC-AD 25).It had become a festival with great significance.This day's important activity is watching lanterns. Throughout the Han Dynasty (206 BC-AD 220), Buddhism flourished in China. One emperor heard that Buddhist monks would watch sarira, or remains from the cremation of Buddha's body, and light lanterns to worship Buddha on the 15th day of the 1st lunar month, so he ordered to light lanterns in the imperial palace and temples to show respect to Buddha on this day. Later, the Buddhist rite developed into a grand festival among common people and its influence expanded from the Central Plains to the whole of China.Till today, the lantern festival is still held each year around the country. Lanterns of various shapes and sizes are hung in the streets, attracting countless visitors. Children will hold self-made or bought lanterns to stroll with on the streets, extremely excited. "Guessing lantern riddles"is an essential part of the Festival.
Lantern owners write riddles on a piece of paper and post them on the lanterns. If visitors have solutions to the riddles, they can pull the paper out and go to the lantern owners to check their answer. If they are right, they will get a little gift. The activity emerged during people's enjoyment of lanterns in the Song Dynasty (960-1279). As riddle guessing is interesting and full of wisdom, it has become popular among all social strata.

People will eat yuanxiao, or rice dumplings, on this day, so it is also called the "Yuanxiao Festival."Yuanxiao also has another name, tangyuan. It is small dumpling balls made of glutinous rice flour with rose petals, sesame, bean paste, jujube paste, walnut meat, dried fruit, sugar and edible oil as filling. Tangyuan can be boiled, fried or steamed. It tastes sweet and delicious. What’s more, tangyuan in Chinese has a similar pronunciation with "tuanyuan”, meaning reunion. So people eat them to denote union, harmony and happiness for the family.
In the daytime of the Festival, performances such as a dragon lantern dance, a lion dance, a land boat dance, a yangge dance, walking on stilts and beating drums while dancing will be staged. On the night, except for magnificent lanterns, fireworks form a beautiful scene. Most families spare some fireworks from the Spring Festival and let them off in the Lantern Festival. Some local governments will even organize a fireworks party. On the night when the first full moon enters the New Year, people become really intoxicated by the imposing fireworks and bright moon in the sky.
History
Until the Sui Dynasty in the sixth century, Emperor Yangdi invited envoys from other countries to China to see the colorful lighted lanterns and enjoy the gala(节日的,庆祝的)performances.
By the beginning of the Tang Dynasty in the seventh century, the lantern displays would last three days. The emperor also lifted the curfew(宵禁令), allowing the people to enjoy the festive lanterns day and night. It is not difficult to find Chinese poems which describe this happy scene.

In the Song Dynasty, the festival was celebrated for five days and the activities began to spread to many of the big cities in China. Colorful glass and even jade were used to make lanterns, with figures from folk tales painted on the lanterns.
However, the largest Lantern Festival celebration took place in the early part of the 15th century. The festivities continued for ten days. Emperor Chengzu had the downtown area set aside as a center for displaying the lanterns. Even today, there is a place in Beijing called Dengshikou. In Chinese, Deng means lantern and Shi is market. The area became a market where lanterns were sold during the day. In the evening, the local people would go there to see the beautiful lighted lanterns on display.
Today, the displaying of lanterns is still a big event on the 15th day of the first lunar month throughout China. People enjoy the brightly lit night. Chengdu in Southwest China's Sichuan Province, for example, holds a lantern fair each year in the Cultural Park. During the Lantern Festival, the park is literally an ocean of lanterns! Many new designs attract countless visitors. The most eye-catching lantern is the Dragon Pole. This is a lantern in the shape of a golden dragon, spiraling up a 27-meter -high pole, spewing fireworks from its mouth. It is quite an impressive sight!