Three thousand years ago, during the Great War between Immortals and Demons, Fu Yu held the position of a general who was leading the charge in the army. He had to work day and night for the heads of the battlefield. Prince Ao Run and Fu Yu of the East China Sea were fighting fiercely. A sudden attack from the devil world left the two of them with no time to relax. Nan Chun Tianzun had been hiding from the world for hundreds of years. When the war came, there was no one in the heaven and the Emperor of Heaven. He waited outside Fusheng Hall for three days before inviting him out. He led his troops to outflank Fuyu all the way from the coast of the South China Sea to Neverwinter Mountain, and formed a siege with Fuyu, annihilating him in one fell swoop. However, he did not expect that the Dragon King of the East China Sea did not send troops to support him, forcing Fuyu to Nirvana and sleep forever. When he closed his eyes, he saw Nan Chun Tianzun coming, holding his body full of Gang Qi, and his fire-breathing eyes seemed to be in great pain. Fuyu thought of his voice "Little thief, don't run away..." When he stole lotus roots in the pond of Fusheng Palace.