Jia Yinjie was more than stunned looking at what Tang Yin had done.
Although her cultivation was now practically non-existent, she could still tell that Tang Yin had sealed his power away. The feeling Tang Yin gave her before was no longer there, which meant that his power had diminished considerably.
That was why she felt confused when she saw Tang Yin fighting a beast with his cultivation sealed. That was quite dangerous.
But then she felt that the power enveloping Tang Yin was not normal. It must have been something amazing, for it had increased his physical strength, or at least that was the feeling she was getting, looking from the side.
Despite that, it never crossed her mind that a person could have that kind of power when he had sealed his power.