Liu Yu, a modern cultural relic restorer, accidentally triggered the "random time and space system" and was thrown into the history of more than two thousand years - from the Langyatai in the 28th year of the First Emperor to the battlefield of Jingzhou; from the canal construction site of Emperor Yang of the Sui Dynasty to the streets and streets of Bianjing in the Northern Song Dynasty; from the city of Nanjing built by Zhu Yuanzhang to the desperate moment of Emperor Chongzhen's Meishan, and finally stopped in the smoke of the Sino-Japanese War of Sino-Japanese War in the late Qing Dynasty.
The system gives him random abilities every time he travels through time: in the Qin Dynasty, he relied on "Exquisite Appraisal of Objects" to break Xu Fu's scam and protect Su's succession; in the Three Kingdoms, he relied on "allocation of grain and grass" to balance Liu Bei and Cao Cao; in the Sui and Tang Dynasties, he used "water transportation planning" to help Yang Guang stabilize Jiangnan; in the Ming and Qing Dynasties, he relied on "city defense design" and "military intelligence analysis" to make up for historical regrets. He was not only a witness to the rise and fall of the dynasty, but also a changer of key nodes. During the reverse journey through the seven dynasties, he wrote a different historical chapter with the power of a mortal.
