Reborn in the Red Mansion, Suppressed by Force!

Suffering a manslaughter from a mysterious boss, he gets a blessing in disguise and travels to a new world! Later, he obtained the mysterious system, practiced peerless magic, and saw that his little concubine had absolute force to suppress his opponents. Become a pillar of the country and gain the appreciation and trust of the emperor! Is all this an opportunity or a conspiracy? What path will he take? Is there any unknown danger ahead, or...! !