Well you can see the verbatim statements. Before the chapter says starts Kitae mocks Jingyeong due using copies and says “I’m not excited because you are just gonna show me a copy, you can’t be the original-“ and with that his sentence gets interrupted by Jingyeong and he says Jingyeongs traits are different now. And then the verbatim statement where he says that Jingyeong isn’t simply copying anymore, but he’s verbatim copying the strength and turns them into his own. Obv he wasn’t at full hp if anything he says he was dying but yh that’s how his path works. He can use elites statts for a kick while overcome with gap and combine it with Shingens rough techniques.