From what True Saint Taiyuan said, if a first-step Eternal returned to the river of space and time, slaying them wouldn't be too difficult. Why was it considered a legendary feat?0

"First-step Eternals aren't considered truly Eternal. They're basically called Perennials," True Saint Taiyuan said softly. "The one slain by the Heavenly Imperator back then was a Dao Pioneer who had taken the second step on the path of eternity."1

"Second step?" Wu Yuan listened with bated breath.0

"Dao Pioneers have unique Daos that are indestructible through samsara. Only then can they be called truly Eternal," said True Saint Taiyuan. "Even if they return to the river, their power remains formidable, nearly comparable to fifth-stage Overlords. In the cosmic sea, Dao Pioneers can easily suppress fifth-stage Overlord powerhouses.0

“Once one pioneers their own Dao, they aren't far from Sainthood. Those who establish Saintdoms are all Saints among the Eternals," True Saint Taiyuan said calmly. "They are given the title of True Saints."1

Wu Yuan listened quietly.0

He felt as though True Saint Taiyuan had just opened the doors of a vast and boundless world to him.0

First-step Perennial, second-step Dao Pioneer, third-step True Saint... Those standing...0