I Can Actually Travel Freely Through History

(Transmigration + System + scheming protagonist) An accident! I obtained a transmigration System and went back to the Three Kingdoms era, where I became Liu Xie! Ten years of plotting, all for nothing. The System was actually erased? Am I not the main character?

The Great Tang

Everyone: “Changsun Yan is so devious! So ruthless!”

Changsun Yan: “I feel like everyone wants to kill me!”

This isn't a wish-fulfillment story. Even I, the author, can't guess how it'll end!

Note: This story takes place in an alternate history. An alternate history!