Look at the picture, the plane, the nurse, and guess the custom of 4-word Lantern Festival.

big lie.

solve riddles on the lanterns, also known as playing riddles, is a unique form of traditional folk entertainment with rich national style in China. It is a characteristic activity of the Lantern Festival that has been circulating since ancient times. On the fifteenth day of the first lunar month, people in China hang lanterns and set off fireworks. Later, some busybodies wrote riddles on paper and pasted them on colorful lanterns for people to guess. Because riddles can enlighten wisdom and cater to the festive atmosphere, many people responded, and then solve riddles on the lanterns gradually became an indispensable program for the Lantern Festival. Lantern riddles add to the festive atmosphere, showing the intelligence and wisdom of the ancient working people in China and their yearning for a better life.

The structure of lantern riddles consists of three basic elements, namely "riddle", "riddle" and "riddle". These three parts are indispensable. "Mystery" is the condition to tell the riddle, and it is also the basis for the riddle to think. It is like a "hypothesis" in geometry. The "mystery" is to limit what kind of "transaction" is guessed and the scope of the answer, which is like "verification" in geometry. "The answer" is the answer. It's like a proven result in geometry. For example, the answer to "there is a road to the mountain" is "applied mechanics".

During the Spring and Autumn Period and the Warring States Period, word games such as "argot" and "literal riddle" appeared in the court and the literati, which can be said to be the earliest lantern riddle. At that time, some lobbyists, out of interest, often did not tell the original intention when persuading the king, but borrowed other languages to hint and inspire him.