Three or three feet breeding refers to the zodiac snake, three plus three is six, and the sixth in the zodiac is the fourth snake, so three or three feet breeding is a snake.

Zodiac is the twelve animals used by some ethnic groups in China and East Asia to represent the year. They are collectively called the Zodiac, that is, mouse, ox, tiger, rabbit, dragon, snake, horse, sheep, monkey, chicken, dog and pig. They are associated with twelve earthly branches (Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei and Zhu) in turn.