Tanabata originated from people's worship of nature. According to historical documents, at least three or four thousand years ago, with people's understanding of astronomy and the emergence of textile technology, there were records about Altair Vega. People's worship of stars is far more than Altair and Vega. They think that there are seven stars representing directions in the east, west, north and south, which are collectively called Twenty-eight Nights, of which the Big Dipper is the brightest and can be used to tell the direction at night. The first star of the Big Dipper is called Kuixing, also known as the champion. Later, with the imperial examination system, the champion in the middle school was called "Dakui Tianxia Scholar", and the scholars called Tanabata "Kuixing Festival", also known as "Book-drying Festival", keeping the trace that the earliest Tanabata originated from the worship of stars. Tanabata also comes from ancient people's worship of time. "Seven" is homophonic with "period", and both the month and the day are "seven", which gives people a sense of time. In ancient China, the sun and the moon were combined with the five planets of water, fire, wood, gold and earth to be called "Seven Obsidian". Seven numbers are staged in time among the people, and the calculation of time often ends with "July 7th". In old Beijing, when doing Dojo for the dead, it was often complete with "July 7th". It is still reserved in Japanese to calculate the current "week" with "seven obsidians". "Seven" is homophonic with "auspicious", and "July 7th" has the meaning of double auspicious, which is an auspicious day. In Taiwan Province, July is called "Joy brings good luck" month. Because the shape of the happy character in cursive script is like "seventy-seven", the 77-year-old is also called "Happy Birthday". Chinese Valentine's Day is the seventh sister's birthday in the traditional sense, and it was named Qixi because the activities of worshipping the seventh sister were held on July 7th.

It is said that on the seventh day of July every year, the Cowherd and the Weaver Girl will meet at the Magpie Bridge in the sky, and because the Weaver Girl has a pair of skillful hands that can weave clouds, the folk girls hope to see the aura of the Weaver Girl, so "begging for cleverness" on that day in Chinese Valentine's Day has become a festival symbolizing love, which is considered to be the most romantic traditional festival in China, and it has produced the cultural meaning of "China Valentine's Day" in contemporary times. Chinese Valentine's Day began in ancient times, spread in the Western Han Dynasty and flourished in the Song Dynasty.

Qixi Begging for Cleverness originated in the Han Dynasty. In the Miscellanies of Xijing written by Ge Hong in the Eastern Jin Dynasty, it is recorded that "women in the Han Dynasty often wear seven-hole needles in the Kaijin Building on July 7th, and everyone is Xi Zhi", which is the earliest record of begging for cleverness that we have seen in ancient literature. In later Tang and Song poems, women's begging for cleverness was repeatedly mentioned. In the Tang Dynasty, Wang Jian wrote a poem that "the stars are shining with pearls, and the palace moths are busy with begging for cleverness". According to "The Legacy of Kaiyuan Tianbao", every time Emperor Taizong and his concubines had a banquet in the Qing Palace on Tanabata, the ladies-in-waiting begged for their own ingenuity. This custom was also enduring among the people and continued from generation to generation. The love story of the Cowherd and the Weaver Girl is integrated into the Beggar's Day, and the folk girls believe it. So every seventh day of the seventh lunar month, when the Cowherd and the Weaver Girl are at the "Magpie Bridge Meeting", the girls will come to the flowers and look up at the stars, looking for the Cowherd and the Weaver Girl on both sides of the Milky Way, hoping to see their annual meeting, begging God to make themselves as ingenious as the Weaver Girl, and praying that they can have a satisfactory and happy marriage over time.