Time Travel Turned Out to Be Useless, Just Started as a Demon Cultivator

The rebirth of the scrap furnace starts with + no system + multiple female protagonists + explosive explosions at the beginning and a fierce process + imagination to cultivate immortality The protagonist is reborn in the Hehuan Sect, and has gone through "thousands of hardships" (making a furnace cauldron) and "ten thousand hardships" (drinking medicinal soup). Starting from a scrap furnace cauldron, after his body was hollowed out, he started out as a demon cultivator and gradually moved towards the path of cultivating immortality.