1, introduced by familiar people such as teachers, family and friends. They generally have a general understanding of their seniors and sisters, and their authenticity can be guaranteed to a certain extent, which is more reliable than that on the Internet.
2. Through the Internet and social platforms. You can go to Zhihu, Post Bar, Mile Mile, WeChat official account or QQ group, but you should pay attention to distinguish the authenticity of seniors and sisters. The advantage is that it costs less, and the disadvantage is that it takes a long time and is easy to find them. And the seniors and sisters you find may sometimes stand up for something.