What does Huang Li mean by rushing sheep?

It originated from the theory of "Six Reds" in the Book of Changes, namely, Woods Chong, Ugly Buchong, Shen Yinchong, You Mao Chong, Chen Xuchong and Hai Si Chong. This is a term in the "yellow calendar", which means that on this day, people who do things ("appropriate" things in the yellow calendar) will have conflicts with their sheep-that is, things will not go well as soon as they meet.