It was unworthy of it.
What Jing Jiu wanted to convey was the act of Liu Ci standing in front of Yin San at the critical moment to block the thunder fires with his palm.
Even though Liu Ci was that "devil man", it was still unworthy of doing so, it was because a Cultivation practitioner shouldn't act in this way.
Back on the sword boat, Liu Ci and Mo Chi had mentioned that they couldn't restrain themselves as a member of Green Mountain; but Liu Ci didn't give this explanation to Jing Jiu.
It was because Liu Ci was aware that Jing Jiu wouldn't approve of it even if he could understand the behavior.
He was a few steps behind Yuan Qijing entering the manor cave because he spent a moment longer enjoying the view of the pine ocean on Shangde Peak, as a result, he became Yuan Qijing's young brother.