It was around six hours after his encounter with the Revenant that Ju Feng was able to leave the haven. Quite a number of medicinal and spirit pills had gone into his treatment. According to the words of the grand elder, the attack on him was a soul based one. When he stepped on the heavenly seal, It directly attacked his soul bypassing his body. The only effect on his body was when he was sent flying, away from the force-field.
After regaining full consciousness, he had been thoroughly checked, and was declared fit to return to his dormitory. The banging headache he was having when he first woke up had subsided too after resting.
Heavens tears.