Go to HowNet, Wanfang and other paper websites to check the tutor's papers. Contact information is usually left on the first page of a paper. But I believe many friends say that they can't find it at all! At this time, you may need patience. If you can't log on to HowNet at home, you can go to a treasure!
For example, when searching ppt courseware, especially the introduction part, teachers usually leave contact information. Sometimes a direct search for the name will get a brief introduction of the tutor and contact information. In addition to the specific tutor name search, you can also try to query the tutor information of the whole college.
We said that general tutors will also give classes to undergraduates, and you can go to the university post bar for help. After all, sometimes there are so many people in a major that the probability of success is not small.