Lin Mo, a modern water conservancy engineer, traveled back in time to the sixth year of Jian'an in the Eastern Han Dynasty due to a rusty compass. He carried ancient scientific and technological knowledge such as "Tiangong Kaiwu" and used "system thinking" to improve productivity in the late Han Dynasty: from the "Sanqi dust method" on the Xinye Baihe River Dam to the steam workshop in Chengdu, from the improved company From crossbows and fire oil cans to the development of steam trebuchets and quantum communication bronze mirrors, they set off a storm of "rejuvenating the country through science and technology" in the troubled times of the Three Kingdoms. At the same time, they revealed the space-time connection between the compass, Zhang Heng's seismometer, and the interstellar civilization of the Xia Dynasty, and finally ascended from the leader of the earth's civilization to the ferryman of the craftsman civilization of the universe.
