Humans are shaped by the zodiac signs and their particular elements; both are complemented by the ascendant. By the way: the Chinese horoscope does not use the rising star on the eastern horizon at the moment of birth. Each zodiac sign of the Chinese horoscope rules about 2 hours of each single day.
This minor subordinated cycle starts at 11 p.m. and lasts until 1 a.m. and is represented by the rat. In the case of a midnight birth, someone’s ascendant is the rat - and its proper characteristics adopt his personality. If your time of birth is known to you then you can select from the ascendant calculation table which animal represents your character.