I'm Going to Die and Go Back Two Thousand Years in the Future

The protagonist travels to the Chu Kingdom and becomes a small feudal noble. At this time, Ying Zheng has just become the king and has not yet grasped the power. At this time, Lu Buwei is still in charge and has not yet begun the pace of destroying the Six Kingdoms. The protagonist uses the knowledge from his previous life to continue to grow and develop. When Qin invaded Chu, he used Qin to destroy the Chu royal family and replaced him. After consolidating the Chu State, he fought with the Qin State and slowly destroyed the six kingdoms, thus unifying the world.