The whole process can be briefly summarized in three steps: Qi Wen appeared, Qi Wen lunged forward, Qi Wen was gone.
Don't forget that Huai Shi was still on fire, and even though the color had changed, its essence hadn't. The flames, fused with a large amount of Apocalypse and negative energy Source Substance, were simply a Soul Furnace. Even Qi Wen in his lifetime would have definitely died from such a plunge, let alone a shoddy replica hastily made.
Not just Huai Shi, even Clement was shocked. He hadn't expected the mass of Source Substance he'd exhausted to summon such a colossal mistake.
He had no idea that the flames on Huai Shi actually had the ability to incinerate Source Substance. He only saw the old man, filled with resentment, dissipate as if he had merely bumped into Huai Shi.
It was as though his wish had been fulfilled and he had ascended to Heaven.