As he pondered this, Yang Chen walked out of the room.
"Hong Yue!" Yang Chen called out.
"Young Master!" Hong Yue appeared from nowhere, transforming into a shadow and standing respectfully at Yang Chen's side.
Yang Chen did not speak in a hurry. Instead, he stared fixedly at Hong Yue.
Hong Yue's heart pounded, and she had no idea what Yang Chen intended by looking at her like that.
Only after quite a while did Yang Chen say, "Use your Spirit Shadow Art. Turn into a shadow and hide in the darkness. Let me see whether your technique has improved."
Hong Yue had no idea why Yang Chen was asking this, so she could only answer gently, "Yes, Young Master!"
The next moment, she unleashed the Spirit Shadow Art and began moving rapidly throughout the manor. Her speed was astonishing, but more importantly, Hong Yue's understanding of the Spirit Shadow Art was beyond the reach of many Shadow Clan members.
She was exceptionally skilled at exploiting the alternating shifts between shadows. Perhaps at first, one could easily grasp her location, but after she changed positions for a brief moment, finding her again would become as difficult as climbing to the heavens.
This was also why Yang Chen had previously rooted out several other Shadow Clan members, yet had been unable to discover Hong Yue alone.
Now that Hong Yue had entered the Spirit Disk Stage, her use of the Spirit Shadow Art had become even stronger and more terrifying than before.
Once she hid herself, Yang Chen made a rough search of the area. Yet whether with his naked eyes or his perception, he could not find any trace of Hong Yue. If even he struggled so much, then other Spirit Disk Stage Great Emperors would likely find it immensely