I'm just a worker, and most of my contacts are operators. I haven't touched the mold design and manufacture you mentioned, so I dare not comment. There have been rumors that you can earn hundreds of thousands a year, but it is difficult to achieve it without ten years of hard work. Be responsible, if there is no better choice, then continue to study in a down-to-earth manner, and the income of this industry is ok. If there are other options, it is best not to enter the factory. It's a closed environment with a narrow contact surface, and the transition period will be very long in the future.

The income of CNC milling center should be good (compared with other jobs).

I just finished a batch of work, and I can only sleep for 4 or 5 hours every day. Should such hard work be put into other industries to make achievements? However, it is difficult to adapt to the present society. If you want to change careers, you have to start all over again. It's hard.