What is Tianyi's position in the geomantic geography of Yin House?

You ask the location of Tianyi, and you don't know whether it's the location of Ten Heavenly Cadres, A, B, C, D, E, Ji, G, Xin, Ren, Gui and B, or Tianyi, a noble person. These are the secret stories of Feng Shui master. After ten days' work, Party B is south of due east 15 degrees, winner is noble, winner is Long Mai, and the horizon is boundless.