Which is more promising, CNC lathe or CNC milling machine?

I think it's better to learn milling machine. First of all, you have to make sure that you learn it well. If you don't learn well, no one wants it or the salary is low. But if you learn well, you will be well paid and popular.

I study milling, and I heard from job seekers that some companies just said that as long as you have good skills, you can raise your salary yourself, as long as it is not too outrageous.

As for your future, I suggest you study both. If the conditions are insufficient, learn milling first.

Because it is easy to learn contact milling, but it is difficult to learn contact milling.

The future development direction of machine tools is integration and modularization. In other words, you can do everything in one bed, which requires you to know them as well as be familiar with them. That bed is mostly imported, which is quite expensive, novice? Who can trust you to do it?