What way can the temple show us?

First, the annual rings

The tree rings on the south side are sparse, because the sun and rain are richer than those on the north side, so the trees facing south get more nutrients and grow thicker, so the rings are sparse; Similarly, the north-facing side is blocked, the nutrient absorption in the south is insufficient, and the annual rings are denser.

Second, Polaris.

The name of Polaris is Senajiu. This star is located at the tip of the bear's tail in Ursa minor. Polaris is a bright star in the northern part of the sky, close to the north celestial pole and facing the earth axis. Seen from the northern hemisphere of the earth, its position is almost unchanged, so it can be used to identify the direction.

Third, snow.

Take the northern hemisphere as an example. The snow on the southern hillside is denser and more granular. The snow on the northern hillside is softer and drier. When the snow melts, the snow on the south hillside melts more easily than the snow on the north hillside.

Extended data:

Name source:

About 15000 to 13000 years ago, Polaris was named Vega because of Yan Zi Shi's Weaver Girl, which originated from the natural worship of ancient stars by ancient Han people. Therefore, it is named Polaris.

Main uses:

Polaris is a very important indicator of field activities and ancient navigation direction. From stargazing to astrophotography, the accurate positioning of the Equatorial Observatory in the observation room is also a very important constellation to identify the direction. Because Polaris is closest to true north, people on earth have been navigating by its starlight for thousands of years.