Lu Yan did not use the Soul Banner immediately, not only because he wanted to test his current Qi Cultivation at the twelfth level, but largely due to He Dongsheng's presence.
Having uncovered immense value from He Dongsheng in two consecutive versions, Lu Yan realized He Dongsheng's significance.
This counterfeit cultivator seemed to have some causal connection with Zhao Huowang, who, as an ordinary person, glimpsed the essence of version updates and left behind important artifacts like the "Heavenly Dao Discussion" and the Heavenly Dao Code.
If Lu Yan wanted to find traces left by Zhao Huowang in different versions, he had to gain He Dongsheng's favor, and naturally could not use the Hundred Souls Banner Magical Artifact in front of He Dongsheng.
So Lu Yan could only let He Dongsheng escape first before exerting his full strength.
