I Blew up the Entire World of Immortality by Selling Fake Elixirs

I was transformed into cannon fodder for cultivating immortals, and was slapped to pieces by the leader of the righteous path. The system said that as long as I sold a fake elixir, my life would be extended, so I set up a stall at the beginning: Dali Pills and Ten Spiritual Stones, which can cure all diseases. On the first day, all the monks in the city chased me and called me a charlatan. The next day, Demon Lord came to the place carrying a coffin: "Can this medicine of yours resurrect my Taoist companion?" I tremblingly handed over Daliwan, and he took it, and it exploded into fireworks and turned into stars all over the sky. The whole place was dead silent until someone screamed: "That's my ancestor who has been lost for three thousand years!"