An Immortal Emperor's body would be filled with treasures, so if he died, his corpse would be a treasure trove. To Emperor-level practitioners, it was extremely attractive. Even if it was risky, as long as there was the hope of obtaining this treasure trove, they would do their best to fight for it.
Clearly, the Emperor level experts who had been hiding in the dark believed that the Heavenly Emperor would not be able to endure the 10th Heavenly Tribulation. Perhaps he had already died. This would be the best opportunity for them to raid the Heavenly Emperor.
...
Ye Qingtang's body streaked across the sky and she turned into a white shadow. In the blink of an eye, she had already disappeared.
About 15 minutes later, in an open canyon deep in the forest. Thick smoke was rising into the sky, accompanied by strange sizzling sounds.
There was a huge depression below, about a hundred feet in diameter. The Heavenly Emperor was lying in it.