What is the meaning of the phrase "the bridge is built on the 7th day of the 7th lunar month"?

Originated from the ancient legend of the Cowherd and the Weaving Maiden, refers to the seventh day of the seventh month that day, Dong Yong and the Seven Immortals with the crystallization of the love of a pair of children came to the Milky Way side of the Milky Way, because the Milky Way vast so that they can not meet the husband and wife, the children can not meet, this phenomenon was seen by millions of magpies, they *** with the development of the magpie bridge so that Dong Yong and a pair of children met with the Seven Immortals, which is the magpie bridge will be.

The Tanabata Festival, also known as Beggar's Nest, the Seven Coincidences Festival or Seven Sisters Birthday, originated in China, is the Chinese region as well as part of the Han cultural influence of the traditional festivals of the East Asian countries, the night of the seventh month of the seventh lunar calendar, or the night of the sixth month of the seventh month of the night of the women in the courtyard of the Weaving Maiden star begging Zhiqiao, it is known as the "Begging for Coincidence". Its origins in the worship of nature and the women's needle begging, after being given the legend of the Cowherd and the Weaving Maiden so that it has become a symbol of love festivals. 2006 May 20, Tanabata Festival was included in the State Council of the People's Republic of China and the State Council in the first batch of the national list of intangible cultural heritage, and is now considered to be the "Chinese Valentine's Day".