Find a time-travel novel

The female protagonist's soul had traveled to ancient times. In the Murong Villa, the female protagonist was weak and sick, so it was difficult for her to cultivate. She had a son who was very good with the Murong Villa's manor master. He married the female protagonist and was very loving with her. The female lead met someone who seemed to be from the royal family. A person called Lin Feng followed him. The female lead and Lin Feng fell into the water and were drugged. Then, it was said that the first child of the female lead was that royal. Which novel is this? I remember that it's the kind of novel where you can cultivate or something. It's considered a strong female novel.