Linchen, a cow from a modern factory, stayed up late and worked overtime. When he opened his eyes, he actually traveled to the end of the fictional Daqian Dynasty and became the second son of the Yan Kingdom who had just lost his brother and father. At this time, Daqian fell apart, the Qianshi existed in name only, and the struggle for hegemony among the seven kingdoms intensified. However, the Yan Kingdom was located on the border and was the weakest among the seven heroes. The treasury was empty, the army was weak, and the people were poor. In the north, the Agula tribe plundered every year, in the east, there were Bohai Kingdom and Goguryeo, and in the south, powerful countries such as Qin and Zhao were waiting for opportunities to annex. Lin Chen, who was promoted to the position of King of Yan just after time travel, faced internal and external troubles and was instantly in a desperate situation.
Fortunately, in the desperate situation, [Eternal Sign-in to Unify the World System] has arrived! By signing in at six o'clock every morning, you can randomly obtain supplies, elite soldiers, and famous historical generals and ministers; accumulate reputation points, which can be exchanged for top technology, massive amounts of grain, and advanced ordnance in the system mall. With the blessing of modern memory and system, Lin Chen "invented" horseshoes, stirrups and improved harnesses, transforming the Yan Kingdom's cavalry into battlefield weapons; promoting the curved shaft plow to distribute high-yielding grain seeds, so that Yan's barren land could grow full of grain; improving the new iron smelting method, the Yan Kingdom's steel production soared, and its ordnance level surpassed that of other countries.
From a weak Yan at the border to a strong force in the north, from the last of the Seven Heroes to dominating the world, Lin Chen step by step helped the people in the camp, organized the army and practiced martial arts, defended the barbarians externally, and divided the six kingdoms. He used the power of the system to gather famous generals to strengthen the country and break the situation and fight for hegemony with the wisdom of later generations. He repelled the plunder of the Agula tribe, conquered the Bohai Kingdom, and Goguryeo encroached on the land of Zhao and Qi to contend with the pressure of the Qin Dynasty. He finally defeated the six kingdoms and overthrew the nameless Qianshi to establish a unified Great Yan Empire. He ascended the throne and became the first emperor of the Great Yan Dynasty, ending the five hundred years of division and chaos of the Great Qian Dynasty and creating a new era of centralized power.
