Is it reliable to upgrade Jiangxi to jxzsb.cn? Is his "Ming Sheng Advanced Class" authentic and reliable?

Jiangxi College-upgraded website is a private website, which mainly promotes cram schools. I was admitted to Jiangxi Normal University through the website of college entrance examination, but I didn't look at any website. However, I suspect that this "Ming Sheng High-end Class" may be an agreement class. If you pass the exam, you will receive tens of thousands, and if you fail, you will get some money back. Actually, the undergraduate course is not that valuable. Moreover, it is relatively empty to study for two years, that is, to get a diploma, but you can enjoy full-time undergraduate treatment in taking the public office, taking the national examination and taking the postgraduate entrance examination.