What is the meaning of "entering the head" in Feng Shui, and how to choose the orientation of entering the head?

Everything is to look around. First of all, you need to know the concepts of Zushan, Shaozushan, parents and Luan Tou. The first step is to stand at the top of Parent Mountain and measure the background and back of Parent Mountain, facing Shaozu Mountain with its back to it, and overlooking the opposite side of China, south and north. You will know what the background is, and the details are different from the first step. Let's go to the forum to learn.