Lin Xuefei, although she came this time, Zhou Yan did not truly act against her because Lin Xuefei's situation is actually more complex. She is a King living out the next life and is very likely to awaken the memories of the past King in her future cultivation, and at that time, what the situation will be is still unknown.
Therefore, Zhou Yan did not temporarily violate her because Lin Xuefei at this time does not yet count as complete Lin Xuefei. Conquering her now would lead to a substantial reduction in the probability of her awakening.
However, Zhou Yan did not mention this situation but instead comforted Lin Xuefei, telling her to achieve the status of King first and then make the corresponding choices because by that time, she will have a unique transformation, and only by then will she be more useful against future dangers.
