After Sleeping for a Thousand Years, I Woke up in the Villain's Lair

When Lin Chuan woke up, he found that he had been sleeping for thousands of years. Everything that was once familiar has long since disappeared, and the only thing left is the necklace on his chest. He stepped into the unfamiliar Fantasy Ancient Continent, only to find that he had already become a secret that all parties were competing for. The cracks in space that existed thousands of years ago, the mystery left behind by her mother Lin Dan, the ghost of the star abyss sealed in the water drop necklace... What truth is hidden in all this?