I Have an Appointment with King Qin

He was once an all-powerful emperor, destroying six kingdoms, unifying the Chinese language, and seeking to dominate the world throughout his life; he collapsed on a sand dune platform, and rested in Lishan Mountain after his death, spending the long nights reincarnating; he thought that by being immortal he could be an emperor for eternity, but he discovered that there was a kind of immortality called Qianxun, which lasted for thousands of years and was reborn in every life. He thought that the silence in the mausoleum was the destiny of eternal life, but he discovered that there was a mysterious thing called impermanence, which could turn around a thousand times and have nowhere to turn his love. By chance, I met the destined person in my thirties, and my fate was ups and downs, and I traveled back to the Qin Dynasty again. When the door of history opens again, some things have quietly changed...