The two sisters in the Prime Minister's Palace have different personalities. The smart sister opened a private medical clinic and was inspired by the old man to embark on the path of cultivating immortality. However, she was severely injured while exorcising demons and lost her ability to cultivate immortality. With her sister by her side, she and her sister searched for medicine and prescriptions. On the way, they unexpectedly encountered a spiritual pet and a divine sword recognized as its master. In the end, the two sisters worked together to make Lingzhao Sword famous all over the world, composing a legend of sisters cultivating immortals.
