The ancients took the use of the Big Dipper seven stars

There are more than seven thousand planets above the Milky Way in the universe. With the development of human technology and science, at present, the naked eye can only see more than three thousand. This also proves that the universe also has spatial limits. Humans have lived on Earth for more than three thousand years. The ancients also left a lot of knowledge to future generations, just take the Big Dipper seven stars, in ancient times people divided the sky into four pieces. When the tail of the Big Dipper points to the southernmost point, then the earth's climate conditions belong to the hottest summer. Douqi Star can not only judge the season, but also can be used as a directional positioning. It is not difficult to see here that the universe is not infinite. It's like a finite space, like a ball. In ancient times, when people sowed crops, they also looked at the seven stars of the Big Dipper to sow seeds. When the tail of the Big Dipper is pointing to the east, it is the day when spring comes. Suitable for sowing vegetables and fruits, crops. In the summer, the tail of the Big Dipper, it points to the southernmost point. It is also when everything begins to grow. When the tail of the Big Dipper points to the far west, many crops have begun to ripen and rice can also be harvested. A good weather and season also determine the harvest of the coming year, and also solve the problem of food and clothing for the family in the coming year, so the ancients called an old saying. It is called spring birth, long summer, autumn harvest, and winter hiding.