Rebirth in Troubled Times, I Burn Beacon Fire to Play with the King

[Rebirth + Machiavellianism + System + Female protagonist's sobriety + Chasing Wife Crematorium] In the previous life, Jiang Chengsi died of humiliation in the harem of Wei State. Wei Yu looked at her cold tablet and suddenly realized. After resurrecting her life, Jiang Chengsi held the power in her hands as a girl and in the name of Yanyun's grandson. Since God has given her another chance, she must be armed to the teeth and fight her way out in this troubled world! Planning, killing and loving each other, will the ice-like barriers gradually melt away?