What does Aotou mean in Feng Shui?

Ao is a common character, the orthographic character is turtle, and its original meaning is a big turtle in the sea. It is commonly known that the number one scholar and the first place are the ones who come out on top. Because in the palace examination, after selecting the top three candidates, the second place, and the top three, they will announce the roll call, which is called Lu Chuan. After the announcement, the salute officer led the top two students from the East Class and the second place from the West Class, and walked forward to His Highness in the palace (the steps in front of the Emperor's Throne) to receive the palace examination list. When they arrived in front of the palace, the No. 1 Scholar advanced slightly and stood on the stone in the middle hall. The stone in the middle hall is carved with a dragon and a giant turtle, which were called Chi's head or Chi's head in ancient times. Since the number one scholar occupies the big turtle in the palace, it is said that he occupies (or stands on) the turtle's head. Later, it was used as a metaphor to mean getting the first place in the exam.