Sword refining's preliminary preparations were very cumbersome.
First, one had to measure the positions of heaven and earth, the angles of latitude and longitude, align above with the various stars, and below with the dragon veins, not a thread's width off course.
After the geomancy was complete, construction of the altars began.
Originally, the Taiyin Hunyuan Ancestor was to be the core. He should have taken the central main position, but Shi Feiyang had to refine nine swords at the same time. Everyone refining swords together would attract more heavenly tribulations aimed at the main position.
The Taiyin Hunyuan Ancestor was aware that even if he withstood the tribulations he would be greatly weakened in his Primordial Qi and, if things went poorly, all his magical treasures could be destroyed here, so he yielded the main position.
