If the institutions with similar admission scores are 2 1 1, directly under the Ministry of Education or something like that.
Suggest a double-degree system, give up those schools in Jiang Dajin, if you really want to take a double-degree exam.
A double degree is still useful in some ways, but it also depends on how the institutions operate.
Shan Zhi University is roughly a platform built by the school. If you comprehensively evaluate the top 5% students in all majors (my understanding), you can enjoy exceptional professional lectures, scholarships, subsidies, undergraduate and postgraduate studies (of course, these benefits need other conditions). Every semester, someone will be rejected and someone will be admitted. If you can persist until graduation, you will be fine.