Generally speaking, such severe injuries for someone at the Immortality Regainment Realm take one or two years to recover.
However, his disciples have all cultivated the Eight Nine Mysterious Art, making their physical bodies inherently strong. Yi Sheng also stays at Four Treasures Peak to refine some pills occasionally, along with those from the Medicine Tribe, who are most skilled in pill refinement.
With their meticulous care, recovering in two years is indeed normal.
"Master, everyone's injuries have recovered. Junior Brother Xiang Ziyu and Junior Sister Yan Yourong have returned to the battlefield at the Immortality Regainment Realm, while Ruo Yun has gone to find those cultivators who sacrificed themselves to save him. She wants to see if those cultivators have any unfulfilled wishes that she can help fulfill, or if their descendants need assistance."
