Jiong Jiong You Yao
Ok here is the theory from some facts mentioned in chapter, In several occasion, there is a mention of similar features of NX with Little Treasure, then I think if, her baby get swapped because the one who got drugged 5 years ago is LTX as mentioned before in one of the chapter, then all is match, Xeulou didn't have authority over the baby before it was swapped with a dead carcass to made NX depressed, but it's all according to her idea in the end and NX lose everything 5 years ago.
So if she had married su yan as planned,she would have had a son,jinxed him and su whatshisface would have died....as she met Lu tianxiao, her fate was changed to that of fame and prosperity...maybe we should thank Ning xuelo🤔🤔 the deluded fool actually machinated a great fortune for who she wanted to harm😂😂😂