Mandatory employee training outside working hours is not the same as job content. If you don't attend, it's considered absenteeism and there is no Man Qin Prize. Is it legal?
After work, it should be a rest time. If you don't take part in the training, you can count as a miner without Man Qin. It seems unfair to hear what you said, but I think you should not worry now and follow the training as learning. After all, there is a saying: "Every time we start to work, every job is a kind of learning for us." Look at the situation first. If they go too far, then choose other measures.