This comic book describes the sharp and complex class struggle and the struggle between two lines in the process of restoring production after our army liberated a mine in Northeastern and Southern Liaoning during the War of Liberation. According to the bourgeoisie's point of view, to repair this mine that has been reduced to ruins by the Japanese invaders and the Kuomintang reactionaries, we must rely on foreign equipment and funds, and it will take ten years, at least five or six years; but the Mine Party's The leadership carried forward the fine traditional style of our party and our army, adhered to the policy of self-reliance, and led the workers to fight repeatedly against the counter-revolutionary armed forces and hidden bandits, and against the bourgeoisie in the construction of the mines, and finally overcame the problem. Despite all the difficulties, it took less than a year to resume production. This story vividly reflects the great victory of Mao Zedong Thought on the industrial front.