Lin Yan, the son of an embroidered woman from a poor family in Qinghe County, started a counterattack with the system. From being humiliated and treated as nobles in the county school, to building a semi-automatic spinning machine to revitalize the embroidery workshop; from being clever and overcoming difficulties in the examination of talents, to building an agricultural tool workshop to promote plows and plows to help farmers; from seizing practical talents in the rural examination, to presenting the "Balance of Scholars, Farmers, Industry and Commerce" plan to the second place in the palace examination. After serving in the Ministry of Industry, he built cement roads across the country, built hydraulic textile mills, and obtained steam engine blueprints, determined to push the Yong Dynasty into a new industrial era. Along the way, he formed an alliance with Zhang Laotie and the prince's appreciation, broke the Wang family's conspiracy, implemented "enriching the people with industry, and strengthening the country with infrastructure" through hard work, and wrote the legendary career of a poor student.