Because couplets are one of the traditional cultures in China. It is a antithetical sentence written on paper, cloth or engraved on bamboo, wood and columns. It is a unique art form of Chinese, concise and profound, neat and even, with the same number of words and the same structure.
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Couplets originated from the symmetry of characters and sounds in China, and appeared before the Zhou Dynasty. With the development of papermaking and calligraphy, couplets have become an independent style.
Couplets are short in form and concise in words, which is not only a vivid artistic expression, but also an excellent cultural heritage. Couplets are developed on the basis of ancient "Fu Tao" and "antithesis". The earliest Spring Festival couplets in China appeared more than 1000 years ago.
According to historical records, on the eve of the Spring Festival in the twenty-seventh year of the post-Shu Dynasty (AD 964), Meng Chang, the master of the post-Shu State, was good at learning couplets on weekdays, so when the new year came, he suddenly made a decree to ask ministers to write couplets on the "Fu Tao Board" to test his talents.