Song Yun had given the best years of her life to Gu Yuanzhou, helping him reach the pinnacle of his career, bearing him sons and daughters.
On the night that she died in the raging fire, he was entwined in a passionate moment with his shining moonlight.
Only in death did she realize that she was nothing more than a tool to him.
Upon reincarnation, she vowed to take back all she had given him...
Just based off of the tags and synopsis this story seems like the gay version of Heir Apparent by Vivian Vande Velde. That story is really good, I highly recommend it :)