It is more difficult. Engineering majors, if you take the self-study exam, don't even have a training class. It's too difficult to learn by yourself. If you must have a degree in this major, I suggest you apply for online education, which is relatively simple.
If you just need a degree, you can apply for some simple majors, such as management and accounting. For details, please visit the website (FZZK5 10/0) for online consultation.