What was the Heavenpath?

Actually, even Daoist Zui didn’t know exactly what it was. He was merely aware that all Monarch Realm experts who were at the end of their lifespan would choose to try and overcome it. Because a Monarch Realm expert of the past who’d been at the end of his lifespan had immediately stepped foot into the Saint Realm upon overcoming the Heavenpath!

No one knew what exactly resided above the Heavenpath because those who knew had either died or vanished. ...