These cultivators who were shocked by Zhu Wuyan's advancement from the early stage of the Body Integration Stage to the perfected Body Integration Stage in just a few decades did not know that Zhu Wuyan was not the Heavenly Pillar of the perfected Body Integration Stage, but a quasi-immortal at the early stage of the Dacheng Stage.
Moreover, among the Mahayana Quasi-Immortals, Zhu Wuwan's combat strength was also at the peak. She was almost invincible in the Mahayana Stage.
Just a perfected Body Integration was enough to make the Southern Wasteland feel terrified. How could Zhu Wuwan dare to easily expose the invincible combat power of the Mahayana realm? That would be too mysterious and unbelievable.
Doing so was also beneficial to Zhu Wuwan, so as to avoid being remembered by more people, especially those Dacheng Quasi-Immortals and Human Immortals undergoing tribulation.