Becoming an Immortal in Two Worlds, from a Weapon Refiner to a Qi Practitioner

One world's magic weapon destroys the world, but the monks live no more than 500 years, and their resources are exhausted; one world's spiritual energy is full and they can live forever, but their combat power is weak. Lin Yue's soul traveled through the mountains and seas to a dying outer sect disciple, awakening to the door between the two realms. He adhered to his true principles and exchanged broken magic weapons from the world of mountains and seas for life-sustaining elixirs from the world of cultivation, and then used the abundant resources of the world of cultivation to feed back the magic weapons of the mountains and seas. Relying on the difference in the rules of the two realms, he holds the ancient treasure that kills immortals and gods in his left hand, and the immortal fruit of immortality cultivated in his right hand. In the gap between the two realms of murder, he quietly carries it and silently makes a fortune, until he quietly surpasses the rules of the two realms.