If you have learned the Chinese names of our solar system planets, you will definitely find their names unique. the star of 「Water」Mercury, the star of「Gold」Venus, Earth, the star of「Fire」Mars, the star of「Wood」, the star of 「Soil」Saturn, the star of 「the king of the Sky」 Uranus, the star of「the king of the Sea」 Neptune, and the star of the 「king of the underworld」Pluto. Why do they all have such names?
Let's talk about Mercury, Venus, Mars, Jupiter, and Saturn first. In ancient times, we humans had not invented the telescope, so we could only see the sky with the naked eye. These five big planets were the big planets we could see directly from the Earth. Therefore, they used the philosophical concept at that time, the five elements, to name the five planets.
Mercury is gray in color and very close to black. The Five Elements concept uses black to represent water, so they use water to call Mercury.
The color of Venus is gold, so it is 「gold」
The color of Mars is red, so it is 「fire」
The color of Jupiter is brown, so it is 「wood」
The color of Saturn is earthy yellow, so it is 「soil」
Then, how about 「Uranus」, 「Neptune」, and 「Pluto」? These three are very far from the earth and we need to use a telescope to see them. Because Westerners first discovered these three, we followed the names they used.