Undergraduate course: this is an APP for upgrading from university to undergraduate course. The course page is very concise and the class experience is very good. The course is cost-effective and gives a lot of supplementary materials. There is a one-on-one supervisor from the class teacher to supervise and urge you to do your homework and recite words. There are exams at every stage, and teachers who answer them will not solve problems easily. The course price is a price, including taking the exam directly, without any invisible consumption. The key is that teachers are very professional and have high academic qualifications.
Netease Open Class: This software includes free open classes of various disciplines and degrees. The level of teachers is very high, and the teaching quality is also very good. You can pay attention to those famous teachers and watch their open class videos in this software. I believe it will benefit you a lot.