First of all, the smelter belongs to the manufacturing industry, which gives people the impression that the working hours are particularly long and the wages are very low. Moreover, it is unbearable for ordinary people to endure the high temperature in summer and work in front of the boiler every day.
Coupled with the high temperature in summer, the working hours are particularly long every day, and the time spent with family members is very small, and the smelter is particularly hard.