C1267 Supreme Mystic Purity Palace
There was also the existence of Ye Qing in the small world created by Hua Xuandu, but Hua Xuandu didn't notice it.
Ye Qing's Great Stealth Technique had played an important role. According to the system's explanation, Hua Xuandu had just entered the realm of Holy Emperor and above. As long as Ye Qing did not actively release his Qi, Hua Xuandu would never be able to detect his existence