In regards to divine eyes, Qin Mu had seen much and was familiar with their structure. He had learned Blind's Nine Heavens Eyes Awakening Skill and even forged Sunshot Divine Cannon as well as obtained Sun Jade Eye and Moon Jade Eye. No matter how complicated was the interior structure of the sun Zi Qing had forged, it had many surface changes, but no departure from the original standard.
When others saw such a complicated structure, they would usually be unable to find a solution. However, he was able to quickly find all the crucial points in all kinds of formations.
Zi Qing had forged the sun not to use it as a weapon. Instead, it was used for lighting up the surroundings, so her formations had no power and were not dangerous. He could try them out without any worry.
On top of that, Zi Qing also left behind a mechanism to put away the sun.
