Just Put on the Shroud, You Said I Don't Need to Die?

His brother put his mother's shroud on him and threw him into the river. Everyone thought he was dead. Three days later, he came back - a blue power seal appeared on his palm, and the wound healed in three breaths, but he could not die. In this world, power calls for power. Some people control fire, some control wind, but he controls the most useless "eternal existence". Those who laughed at him for wearing a shroud, he wanted to take back one by one. But he didn't know that from the moment he woke up, he was already the core sample of a certain experiment.