Monthly salary, 34 yuan. In the 1960s and 1970s, the wage system of Chinese workers was eight levels. The technical post is a trainee for three years, with a monthly salary of 18 yuan in the first year, 20 yuan in the second year and 22 yuan in the third year. After the apprenticeship, it is rated as Grade I, so the monthly salary of the apprentice is 34 yuan. A steel plant refers to a factory that produces steel. In old China, due to the weak foundation of modern iron and steel industry, low output, few varieties and poor quality, the departmental structure and regional distribution were very unbalanced.