The time traveler Zhao Long relied on his prophetic ability to help Liu Bang rise, but he turned to Zhang Han because of being tabooed. He helped Zhang Han revitalize the Qin army, united with good generals such as Han Xin and Zhao Ben, and defeated Liu Bang's army repeatedly with his wisdom. He disintegrated Xiang Yu's power in Julu, unified his old troops, subdued Baiyue, and pacified the princes from all directions. After the war, the New Deal was implemented to build water conservancy, expand trade routes, connect the Western Regions, Southeast Asia and Central Asia, and establish cross-regional alliances. Daxing culture and education, promoting the integration of Yi and Han, cultivating talents, and eventually assisting Ying Che to ascend the throne to continue the Qin Dynasty, create a prosperous Yongtai era with prosperous people's livelihood, the coming of all nations, and prosperous cultural heritage, and lay a solid foundation for the Qin Dynasty for all generations.