Are the linkmen of Guoneng Ganquan Railway Co., Ltd. tired?

tired. According to the recruitment information of Guoneng Ganquan Railway Co., Ltd., it is known that the linkman of Guoneng Ganquan Railway Co., Ltd. needs to do tedious work, and often works overtime when he is outdoors all the year round. The rest time is short and there is only a single break, so the work of the linkman is tired.