What did ancient people mean by "hanging a sign"?

Banknotes are a traditional custom of the Han nationality. Different places have different names, such as hanging a note, hanging a thousand, hanging a brand, hanging money, hanging money, happy money, red money, hanging a note, happy note, red note, door hanging, door flower, door money, door flag, flower paper, colorful floating, year color, shop color, spring newspaper, hanging a thousand children and so on. The doormat is a traditional auspicious ornament for the lintel of the Han nationality during the Spring Festival. Generally, it is cut and carved from red paper or colored paper, and it is rectangular. The hollowed-out back is decorated with square hole coins, Wan Ziwen, water ripples, etc. , with auspicious inscriptions on it.

? There are auspicious patterns or words such as blessings and happiness, and there are various ears below. People put doormats on the lintels on New Year's Eve or New Year's Day as a New Year's holiday. Since ancient times, posting door stickers, a folk custom of the Han nationality, has been very popular and has become a beautiful landscape during the Spring Festival, which is intended to bless Jinafu. Spring Festival is an ancient festival in China, and it is also the most important festival in a year. How to celebrate this festival has formed some relatively fixed customs and habits in thousands of years of historical development, and many of them have been passed down to this day.

? Around the Tang and Song Dynasties, it became a common practice for Han people to paste Spring Festival couplets on the lintel instead of green couplets. Chen, a poet in the Song Dynasty, quoted Miscellaneous Notes on the Chronicle of the Imperial Dynasty as saying: "On New Year's Day, 49 banners were cut with crow green paper or green silk to enclose a banner, which was worn by parents when they were 18 years old or pasted on the lintel."

? This is the prototype of the door note, which is intended to welcome the New Year and receive blessings. In the Qing Dynasty, Fu Cha Dunchong wrote "Yanjing remembers the old and hangs thousands", saying: "Those who hang thousands are engraved on red paper with auspicious words, and a long ruler is attached to the door to reflect peach symbols. Traditionally, the first day of the first month is the Year of the Rooster, the second day is the Year of the Dog, the third day is the Year of the Pig, the fourth day is the Year of the Sheep, the fifth day is the Year of the Ox, the sixth day is the Year of the Horse and the seventh day is the Year of the Man.