What does the fortune-telling term flat head mean?

What does the fortune teller mean by flat head and rubbing feet?

Hello, covering your feet, such as Bing Shen, Ding You, Tian Gan Bing Ding Huo sitting in Shen You, Tian Gan Ke Di Zhi, such a combination is called covering your feet, for example, Yi You, Tian Gan A B wood sitting on the ground support, such a combination is called cutting your feet, the eight-character god is gold, the cover is unlucky, and it needs to be rescued by water, and the eight-character god is wood, cutting your feet.