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What did the ancients rely on to tell the direction?
1, find the direction of the tree rings: you can find a stump in the forest, but it may not be easy. Identify the direction according to its annual rings, because its annual rings are always wide in the south and narrow in the north; You can see an independent tree with lush foliage in the south and sparse foliage in the north.

2. Find the direction in the ant nest: you can tell the direction according to the ant's cave. Because most of the female ants' holes face south; In many rocky places, you can also find a striking rock. The moss-covered side of the rock is the north side, and the boring and bare side is the south side.

3. Find the direction of the Big Dipper: If it is a starry night, you can tell the direction according to the stars: first find the Big Dipper in the sky. If you don't know what the Big Dipper is, I can't help it. Find the sixth and seventh stars along its spoon handle. According to the mathematical principle of two points determining a straight line, two stars are connected into a straight line, and a bright Polaris is is found on the extension line of this line.

4. Find the direction of the snow: If it is in winter, the part of the snow that is difficult to melt is always facing north due to sunlight.

5, looking for the direction: this is easier, the ancients should learn, because the following four are not so easy to find. Use a watch to tell the direction: divide your time by 2, and then aim the quotient at the sun. The direction indicated by 12 on the dial is south. For example, at 8 o'clock in the morning, the quotient divided by 2 is 4, and the 4 on the dial faces the sun, and 12 refers to the south. If it is afternoon, it should be calculated according to the 24-hour timing method.