Speaking of the Immortal's Tomb…
Legend suggests that it houses the body of a real immortal, far superior to the remnants of the Immortal Palace. Its emergence would unleash a tremendous power, representing great opportunities. Yet, even though Jiang Hui is now in the Supreme Realm and his strength matches that of a true Immortal, he still can't explore the deepest part of this towering mound of yellow soil. He is blocked by an unseen force that doesn't allow him to delve any further.
Of course, Jiang Hui is not unduly worried. Even if there is a body of an immortal inside this mound of yellow soil, it would have long since gone quiet. Otherwise, it would have revealed its power by now, especially under his diligent exploration. It definitely would not remain unresponsive.