Tell me how steel is made.

2. When you encounter practical difficulties in completing the task, you must have indomitable spirit and execution. Only by working hard in this way can you skillfully and creatively complete the task entrusted to you by the party and the people;

3. Constantly analyze yourself, improve yourself and surpass yourself. Only in this way can you constantly separate yourself from selfishness and laziness and make yourself a firm proletarian soldier;

Only in this way, people who selflessly dedicate their youth and life can be refined into an iron-like political party and political system, and can understand why the proletariat should liberate all mankind to liberate itself, and only in this way can it truly liberate all mankind.