On Australia 176 Immigration;

Because you didn't apply for immigration as a law major, that is to say, your undergraduate degree in law major in China is only recognized by the universities here. Immigrants do not admit it, and it is impossible to get a bachelor's degree or above 15.

For you, it must be hope:

Bachelor degree or above (15)+ 2 years of full-time study in Australia (5)+ age (25)+ relative guarantee (10)+ IELTS 4 7( 10)=65.

In this case, you said that the highest education obtained by the occupation you applied for must be a bachelor's degree or above. You plan to study electrical piping engineering in tafe, which has nothing to do with your law degree. . . . So ... you can consider studying for a bachelor's degree or a master's degree in other majors here, and then re-engage in your legal major when you get your identity.