In the house of the Minister of Industry, the concubine Su Yuan lives like an invisible man. His aunt's mother wants to adopt him as an apprentice, his aunt's brother treats him like a servant, and his only place is the shabby tool room left by his biological mother. Armed with a plane and a pile of blueprints, this silent young man mastered the art of mechanics and water conservancy to the extreme in a deserted place.
There was a severe drought in the suburbs of Beijing, and the court repeatedly failed to build canals. Su Yuan entered his father's study at night and discovered the fatal mistake in the direction of the waterway. He drew up a correction plan overnight and posted it anonymously outside the Ministry of Works office. The canal was built according to the plan, and the whole city was shocked. After his identity was exposed, his aunt suppressed him in every possible way, so Su Yuan resolutely took part in the Hundred Works Examination as a lowly "craftsman" - it was the only way for craftsmen to take the imperial examination.
Wooden oxen and flowing horses carry heavy loads for hundreds of miles, the model of the Yellow River alarms the Ministry of Water Resources, and the theory of border equipment directly points to the key points of the military country, winning the first place in three trials. The minister of the Ministry of Industry accepted an unusual disciple, but the Confucian officials attacked him and accused him of "confused the saints with his strange skills and cunning".
"Ten Treatises on Tiangong" was presented in front of the hall, and the emperor awarded him the title "National Craftsman". Many years later, he stood on the embankment he designed with his own hands and asked all the scholars in the court with a smile: "When the flood comes, will you use the scriptures to block your mouth?"
