I plan to visit my relatives in Australia in the second half of the year. My relatives are my aunts. Is it difficult to get such a visit visa? What evidence do you need?

Your situation is complicated. You need your grandparents' hukou and your family's hukou to prove that your grandmother and your father are mother and son, and you also need to prove that your father and your father are father and son. Then you need to prove the relationship between your aunt and your grandmother. It is recommended to apply for a tourist visa directly and go with a group. As long as you provide proof of deposit and property at home, there is no problem with deposit.