1. The websites of schools and colleges generally have teacher profiles.

2. Search online, don't just know Baidu. There are also major forums to search.

3. Go to China HowNet and search for the name of the tutor you want to apply for, and find out the published papers. Generally, there will be a contact email at the bottom of the first page or the last page of the paper, which will be used frequently and checked almost every day.

4. Ask your senior fellow villagers.