How to distinguish between the east and west meridians of the South Pole and the North Pole is related to the clockwise rotation of the South Pole and the counterclockwise rotation of the North Pole. Please elaborate. As you said, you need to look clockwise/counterclockwise to distinguish the east and west meridians of the polar regions.

If you find that on the map of the North Pole, longitude increases counterclockwise, that is, east longitude, and decreases, that is, west longitude.

On the Antarctic map, longitude increases clockwise to mean east longitude, and decreases to mean west longitude.

The principle is that in the North Pole, the counterclockwise direction is east, in the South Pole, the clockwise direction is east. Because the earth rotates from west to east, the general globe demonstration is from left (west) to right (east), which is equivalent to looking down at the globe from the North Pole, so the rotation direction is counterclockwise, while looking up at the globe from the South Pole, the rotation direction is clockwise. You can travel around the world to help you understand.