After Agreeing to Marry and Become a Widow, Why Did the Prince Come Back to Life?

[Double life of male and female protagonist + female protagonist first gets married and then falls in love] In her previous life, she held military power to help a scumbag but killed two people. He planned his whole life but lost his lover. In this life, in order to seek a good death, she abandoned the scumbag man and entered into a ghost marriage, but she happened to meet him who was reborn after death and looking for a lover again. Destiny allows them to live again. Should they wander for a lifetime for love, or seize mountains and rivers for righteousness? General Zhu Yu tried his best to help the prince in his previous life, but was betrayed by a scumbag and his own sister. After his rebirth, Zhu Yu preferred to marry the short-lived prince Zhong Shen in order to avoid disputes. Unexpectedly, Zhong Shen was also reborn. He climbed out of the coffin and pretended to be a housekeeper, pursuing the "former sister-in-law and now wife" Zhu Yu who he loved all his life. "In the previous life, you were my sister-in-law and general. In this life, you are my wife and lover. It took me two lifetimes to hold you, so how can I let you go again?"