Constellation criminal collision arch _ criminal collision arch in astrolabe

What is the meaning of Liuhe Arch in the constellation of criminal Hui Chong?

The punishment, impulse, meeting, Liuhe and arch in the constellation refer to the included angles between the two planets and the center of the astrolabe, where the punishment and impulse correspond to 90 degrees and 180 degrees respectively, and the meeting, Liuhe and arch correspond to 0 degrees, 60 degrees and 120 degrees respectively. At different angles, the two planets will have different effects, which will have different effects on the whole astrolabe.