It was clearly mentioned in Novel if Jing at first does not give his spiritual power toXY, it would have been…
tbh that's my point too I find him being reckless like even xuan was ready to jump into fire if it wasn't his guard to make him faint he would have jumped into fire to save xy
they don't actually completely change in every life the only thing that gonna change in their personality is that they won't remember their immortal life they think of themselves as mortal world person in the starting of 1 and 2 life its is just like that in both life one them remember and one of them don't ,while in other life they remember they are immortals so their personality ain't gonna change much but they're love for eo will become stronger each life I won't tell you why tell why they don't remember their immortal life in mortal world it will be a big spoiler you'll know when you watch the ep today and I bet you'll be attached to each of their lifee