The difference between the twelve constellations and the celestial constellations.

The orbits of the eight planets in the solar system around the sun are * * * planes, which are called ecliptic planes. In ancient times, in order to facilitate observation and divination, the constellations on the circumference of the ecliptic plane centered on the earth were divided into 12, which were called the twelve constellations of the ecliptic. This is the difference between the zodiac and ordinary constellations.