I Just Absorb a Little Death Energy, So How Did I Become a Miracle Doctor?

[No System] [No Golden Finger] [Decisive and Ruthless]

After weathering the mortal world's deathly miasma, he broke through the boundaries and returned, believing he could knock once more on the gates of immortality.

Instead, he found immortal corpses piled like mountains, and the Great Dao was a prison.

Only then did he realize that the tribulation he faced on his path to immortality all those years ago had been Heaven's final attempt to hold him back.