To sum it up,while a person might appear to be a dragon they might actually be a snake internally and an ox secretively.Combined with the five elements,this makes for 8 640 possible combinations (five elements,12 animals,12 months,12 times of day) that a person might be.These are all are critical for the proper use of Chinese astrology.Many Western displays of the Chinese zodiac omit these,as well as the elements,for easier consumption and understanding.