"The Oath of Reincarnation: A Love Song in Destiny" tells the legendary story of Lin Zhaoyuan and Shen Ruxue's repeated encounters and separations in the reincarnation of history. Every time they are reborn, they will fall into family and country disputes, power struggles and emotional entanglements in different eras. Wei Muchen, as the embodiment of fate, has always used different identities to prevent the two from staying together. Whether he is an imperial official or a powerful figure in the world, he controls the overall situation with interests and desires. Qin Mo and Zhao Yulan, as close partners of the protagonists, witnessed this love that spans time and space. As reincarnation progresses, Lin Zhaoyuan and Shen Ruxue gradually awaken, trying to break free from the shackles of fate and find a way to break the reincarnation. In the repeated separations of life and death, their emotions continued to sublimate, and finally challenged the ultimate test of fate in the "ultimate reincarnation". The novel uses historical biography to describe the family lineage, personal growth and social changes of the protagonists, interweaving personal destiny with the current of the times, and showing an epic chapter of love, freedom, resistance and growth.