No, generally speaking, pre-job training is not difficult. As long as you stick to it until the end, you can pass it, because it is a kind of education and training for enlistment, and it is only militarized management. The time is seven days, so it is not difficult to take pre-service education and run. Pre-job concentrated education refers to the activities of "training" young recruits in advance according to the one-day life system of the army, simulating the life in the military camp and carrying out closed management.