What does the word "fleeting time" mean in fortune telling?

1. Time flies. During the Southern Dynasties and the Song Dynasty, Bao Zhao wrote the poem "Going to Yunyang for Nine Miles": "If you don't return to your heart, you will be unlucky." Tang Huang Tao's fable poem: "Fifty years ago, I tilted towards youth. Fifty years later, the sun invaded my head. " Zhang Yuanke's song "Happy in front of the Temple and Missing" for a long time: "Flowers fall in one year and get married in spring." The first time in Su's Broken Goose: "What a pity to sweep leaves and burn incense to send me away!" In the past, fortune tellers called people a year's luck. Song Sushi's "Two Rhymes from the East Pavilion": "All localities may wish to build idle and count the years." Awakening Du Zichun's Three Visits to Chang 'an: "I think my time is not good, so I didn't enjoy myself, or even so. "Zhao Shuli's Marriage of Xiao erhei" V: "Xiao erhei has been clever since childhood, counting the zodiac signs, learning lessons for six years, reciting in a fleeting time, or a few days' ugly jiazi ugly gold" and other formulas have been memorized by heart. "3. The fleeting time refers to the annual heavenly stems and earthly branches. How to calculate a year depends on the results of heavenly stems and earthly branches and heavenly stems and earthly branches in your life this year. For example, if someone is lucky enough to be an official, when can he be promoted? It depends on the time. If the time flies and he becomes an official, then he will be promoted this year. Conversely, if an official is defeated, when will he lose his official position?