When Lin Duan used the Seven Stars Saber, Ye Tianchen felt very puzzled, because whether it was the probing at the beginning or the full-strength swing of the saber later, even though the attacks were very powerful, to the point where they almost seemed to conjure substance out of void, Ye Tianchen did not sense any fluctuations of inner strength. At first, he thought Lin Duan was holding back, but later he realized that wasn't the case.
As Ye Tianchen had suspected, the reason Lin Duan didn't have any inner strength fluctuations when he made his moves was that he had internal injuries and couldn't muster any inner strength. Otherwise, with the power of the Seven Stars Saber combined with strong inner strength, Ye Tianchen wouldn't have found it so easy to withstand the attacks.
