Where is the South Big Dipper?

The Big Dipper is in Ursa Major and the South Dipper is in Sagittarius. Purple MSI is the Polaris that we often say, and it is also the emperor star. When Polaris is due north, that is, when it passes through the meridian, Polaris passes through the meridian twice a day. But the real Polaris is a precession star, which moves between stars. The so-called age star is a phenomenon that the equinox retreats about 50 seconds on the ecliptic every year, and the earth axis takes the direction perpendicular to the ecliptic as the axis, with a period of about 26,000 years. On the celestial sphere, the north pole inserts a small circle around the yellow pole, which is mainly the result of the force exerted by the sun and the moon on the equatorial uplift of the earth, just like the fixed motion on the ecliptic. This result is tiring according to the times. Four thousand years ago, the North Pole was in Delta Star in Draco (right pivot), Beta Star in Ursa minor (emperor star) in the first two thousand years, and Alpha Star in Cygnus (Tianjin four thousand) in the last eight thousand years. Ancient sages, looking up at the stars in the sky, used the changes of the position of the sun and the moon in the stars of Ursa Major and Ursa Minor to calculate a person's nature, which can be consistent. It can be seen that there are some forces and laws in the universe.