The work of prisoners in Tianjin Xiqing Prison is not heavy. According to relevant public information, prisoners' labor tasks are all made after experts' calculations. For example, clothing production is scientifically calculated, and the amount of labor in each process is scientifically distributed. If it operates normally, more than 90% can complete the quota task on time. All labor tasks are completed by operating machinery, and there is no heavy physical labor. Most of the time, they will get off work on time, and sometimes they will work overtime for a short time in order to catch the bill.