What are the stresses on geomantic omen in winter solstice and summer solstice?

In winter, the ground floor is the boundary, and the ground floor has traces of yang. With the increase of the month and the day, the yang gradually rises in Daoism. From winter to summer, it is called Yang Bureau, and from summer to winter, it is called Yin Bureau. Because the ground gradually rises, it becomes yin instead of yang. ...