Father, Your Blade Wasn't Fast or Ruthless Enough Back Then

[System] [Otherworld] [Summoning] [Not a Saint] [Decisive and Ruthless] The last heir to the Yu Dao tradition on Blue Star transmigrates into the body of a prince of the Great Tang in another world after a medical accident. After eighteen years of plotting, he massacres his imperial relatives overnight and ascends the throne. He launches an expedition against Great Liao, and one by one, its lands are conquered by the Great Tang. Li You discovers that his Taoist lineage is far from simple, and that the System is exceptionally sinister. The Taoists, Buddhists, Confucians, demon clans, and dragon clans all appear one after another. The tiny Xuanhuang Realm is the very source of the next great tribulation of the myriad heavens. Under the schemes of the Taoist patriarch, the Saints appear once more. Is the Heavenly Dao of Blue Star loyal or treacherous? Where has the long-vanished Dao Ancestor Hongjun gone? What are the Two Saints of the West plotting? Why have generation after generation of transmigrators from Blue Star failed to return to their home planet after achieving success, and what are they plotting? A conspiracy that has endured for countless eras is about to resurface. What kind of counterattack will the Human Dao and Earthly Dao, long suppressed by the Heavenly Dao, launch...?