There may be many explanations for the answer to this mystery. We can guess the word "Tao" from "The Right Way on Earth, Cang Sang Reaches", because the path of "Tao" is usually straight, and only 7 of 1 and 0-9 are composed of straight lines, in which "7" has a turning point, but the first sentence of the riddle has no turning point, so the answer may be "1".

However, the solution to the puzzle "Go high and fly freely" may not be unique. The answer to this riddle may be "dragon". Because only the "dragon" can fly in the zodiac, "going high" can be understood as the characteristic of "dragon". And "freedom" can be understood as the form of "dragon" is free and unconstrained.

On the other hand, "fly high" can also be understood as "15". Because the word "fly" is inverted as "5", and the number "15" is considered as a very auspicious number in China traditional culture, representing harmony, smoothness and bumper harvest.

In a word, the answer to this riddle may be "1", "dragon" or "15", which are consistent with the hints in the riddle.