Had he deliberately allowed Shang Sha to injure him? Although Di Jiu was stupefied, he managed to quickly snap out of it. Jia Qian must not have expected his ability to improve so quickly within two months.
If he'd used normal cultivation techniques, he could not have possibly reached a level that would have allowed him to kill Jia Qian within a period of two months. It seemed that the speed of his improvement was connected to his qualifications, as well as the Major Conduit Internal Records.
If he hadn't cultivated the Major Conduit Internal Records, Di Jiu speculated that it would have been impossible for him to defeat Jia Qian.
If he had not cultivated the Major Conduit Internal Records, he could not have cultivated the third saber move either. After all, he had never met a Di Clan disciple who could cultivate the Di Clan's third saber move as powerfully as he had. However, mastering the fourth saber move was even more of an impossibility.