Dress up as a Prince and You Want Me to Join the Tianxiahui?

Travel+Rebirth+Fantasy+Dynasty Hegemony+Dark Taboo [Devoured by Demonic Paths] + [Treasure of Luck] [Family Feud] + [Brothers' Rivalry] + [Mystery of the Planes] Traveling to another world, I originally just wanted to be a dandy prince. According to the plot, I should have waited for the system to come, but what I waited for was that the eldest brother and the second sister killed their father to seize the throne. Before he died, he cut off his arm, and his blood stained the seal he had carved with his own hands, which read "As ordered by heaven, he will live forever". But I never thought that Qilin would be surrounded by Taotie. After returning from rebirth, should I kill my brother and my sister to avoid repeating the same mistakes, or should I recruit soldiers and horses to embark on an invincible road to find the truth about time travel? Can Gu Yuan solve the mystery of time travel, and can he break through the boundary wall and return to the previous world?