Although Qiu Baihe had escaped from the battle with Huzun, he had already been severely injured by Huzun before fleeing.
After fleeing all the way back to the headquarters of the Misty Sect, he collapsed at the entrance due to his heavy injuries. Fortunately, patrol guards found him and rushed him to the infirmary for treatment; otherwise, given his condition at the time, he would have been completely dead within half an hour.
"Vice Sect Master, what on earth happened? Where is Jinze, and where is my son?"
Chapter 671