The Clear Sky of Shushan, the heart of Shushan, was indeed a new world. 

"Get on your sword."

Shen Xingyu gave a gentle smile as she rode towards the clouds. Wu Yu followed closely behind. As he flew through the dense clouds, the shrouded sky glimmered vibrantly with different colors in the sun.

They continued forward for almost half a day before they finally entered the Huang sword domain. The area below them was only considered the foot of the mountain.

Wu Yu was still quite a distance away from the actual Clear Sky of Shushan. When he looked over there, he noticed a plethora of magnificent and vast palaces decorating the face of the Clear Sky of Shushan. The Clear Sky of Shushan was an extremely steep cliff. The various buildings, spirit designs, and other installations were all neatly embedded in the mountain itself. 

In the air, several spirit designs were whirring about. Some of them were even holding a couple of islands afloat in midair. 

Even though Wu Yu had done some research on spirit designs, he was but a novice in the field.

These revolving contraptions, along with those built for defensive purposes, were too complex for him to fully understand. Among them was the most complete and perfect spirit design. This was rumored to be built by someone at the Primordial Spirit Transformation Realm, and it was a contraption that...