Princess, Why Did You Bite the Regent Again?

The regent was unmatched in beauty in the entire imperial city, but he fell in love with the emperor's ninth princess. But the Ninth Princess fell in love with Si Yao at first sight because of the grace of saving her life, and insisted on marrying him, but was tragically abandoned in the end. Now that she has been reborn, she seems to have discovered some ulterior secret. The powerful regent actually loved her for two lifetimes. Later, every once in a while, a row of teeth marks would appear next to the Regent's Adam's apple, and everyone couldn't help but sigh that the Regent was also... When the mysteries were uncovered layer by layer, I realized that it was him who I had always loved, but there was no chance for me in my previous life...