I Swapped Hearts with the Empress

A thousand years ago, a sage descended from the universe and brought cultivation to Earth. From then on, people on Earth learned that cultivation existed elsewhere in the universe, and Earth entered an era of modern cultivation. A thousand years later, Chen Ze, an ordinary student at Qingyu High School, discovered that sometimes, when he woke from a dream, he had switched bodies with the chief disciple of the Qitian Sect, hailed as the strongest sect in the universe. From then on, Chen Ze could freely enjoy the techniques and pills of the universe's strongest sect. The only problem was that the chief disciple of the Qitian Sect was a woman, and not just any woman: she was the future Empress, believed to have the best chance of reaching the rank of Great Emperor in this generation. (Chen Ze: I just switched bodies with the future Empress. How impressive is that?)