What is the relationship between the Big Dipper and the constellation?

Well, as the Big Dipper said upstairs, I'll say the latter. The highest day on the earth is a star, and the 28 constellations are just the ancient division method of China. There is no necessary connection, but they will have an irregular intersection with the 12 constellation. For example, a star in Scorpio is Antares, and a star in Taurus is Bisuwu. The ancients in China divided the stars in the sky into 28 groups, covering the northern and southern celestial spheres, and the 12 constellation, as its name implies, is the zodiac. Except for the special Ophiuchus, everything else is on the ecliptic. There are 88 constellations in the whole day, of which 13 is the zodiac constellation. In this 13 constellation, only Ophiuchus is not on the ecliptic, which is simply the case.