In her previous life, Xiao Huanyun, the Princess Yongshi of Liang, gave her heart to the wrong man, Gao Zhan. Only on her deathbed did she realize how she felt: "A Yan, if you die, I won't go on living!"
In her previous life, Gao Yan, the gentle and refined Prince of Changshan, had been in love for years with his childhood friend, Xiao Huanyun, the Princess Yongshi of Liang. But Xiao Huanyun loved Gao Yan's younger brother, Gao Zhan. Gao Yan stole her away and doted on her for a lifetime. Before he died, he said, "Huanyun, don't cry anymore. Back then, on the wall of Hanguang Hall, I was the one who saw you first, not A Zhan. I was the first to fall in love with you."
They had missed too much time together in their previous lives. Now the emperor and his consort transmigrate back to the day of their wedding, before his ascension to the throne. Can they keep their land safe this time?
"Huanyun, I'll give you a better Liang, and I'll give you a better Qi as well. Together, we'll build the empire of Great Qi!"
The male and female leads stay true to their original characterization, but Gao Zhan is an antagonist in the early chapters. Don't read if that's not for you.
Just turn your brain off and enjoy the romance. All that matters is that it's sweet.