Are the packers in Tongrentang Pharmaceutical Factory tired?

Tired. The packers in Tongrentang Pharmaceutical Factory are manual workers, who need to pack repeatedly, which is equivalent to a step on the assembly line. It may not be difficult to look at this job alone, but if the workload is heavy, the limbs of people who keep repeating a certain action will become very stiff and sore, and the packer of Tongrentang Pharmaceutical Factory will pack a lot and be very tired.