What is the meaning of the three-way intersection in geomantic omen?

First of all, it depends on whether the road rushes to the door to form an arrow, or whether the road crosses at right angles to form scissors, which is unlucky.

Furthermore, it is natural to see that the fork in the road is auspicious if it is located in the direction of the house, but it is unlucky if it is located in the unfavorable position of Huang Wu, Erhei, Taisui and Sansha.