Immortal Xia, I Build a Magic Court, and the Killing God Bai Qi Protects Me.

Main plot: The male protagonist Li Cangtian was a business tycoon who traveled to the world of Xianxia and seized the body of the demon king who had just been besieged and fallen by the righteous allied forces. Faced with the desperate situation of his sect being broken and everyone in the world facing enemies, he awakened the "Eternal Immortal Dynasty System". He did not follow the path of ordinary demon cultivation, but reshaped the demon sect with the "Yunchao flow", abolished the lax demon sect system, and established the "Great Qin Demon Court" with strict discipline. Using the system, he summoned Bai Qi, Xiang Yu, Han Xin and other Chinese historical killing gods to transform into "Shura Demon Generals" to prove the Tao through killing. Externally, he opened the "Tianji Tower" to refine the world's hearts and control public opinion in Kyushu; internally, he condensed the destiny of heaven and earth and the incense of all living beings, and forged the supreme destiny. Starting from a corner of the southern wilderness, he led the Demon Court Iron Cavalry to crush the hypocritical immortal sects that claimed to be the way of heaven one by one. Uncovering the truth that the immortals in the upper world regard the lower world as a "pasture", the whole country finally ascends to the ninth level and establishes an eternal demonic realm that governs all heavens and worlds.