Zheng Qing had exploded once before.
In the magical sense.
That time, his self-destruction wiped out a small world and blew up two projections descending from the deeps of the starry sky. The power was immense. After returning from Mr. Wu's little teapot, Zheng Qing had secretly attempted multiple times to search for the feeling of that "self-destruction."
Of course, he wasn't pessimistic or suicidal, desperately seeking death just because he was marked by a forbidden curse.
He just wanted to be prepared.
In case some Outer God ignored the rules of combat, bullying the weak, and suddenly appeared before him; in case the Radical Group of the Dark Council or Moon Council abducted him, intending to slice him up for research; in case he was confronted by an unbeatable enemy.
Like now.
Then, if he mastered the method of "self-destruction," at least he wouldn't be utterly powerless to resist.