In our country, on the night of the seventh day of the seventh lunar month, the weather is warm and the vegetation is fragrant. This is commonly known as the Qixi Festival, and it is also called the "Qiao Qiao Festival" or "Girl's Day". This is the most romantic Chinese traditional festival. A festival was also a day that girls valued most in the past. On a clear summer and autumn night, the sky is shining with stars, and a white Milky Way traverses north and south. On the east and west sides of the river, there is a shining star on each side of the river, facing each other across the river, and that is the Altair and Vega.