This is in the library. Baidu Library is an important platform for Zhihu and recommendation, as well as for teachers and students. If you want to summarize the knowledge points, you can generally get them through library search!

References:

/search? word = % B8 % DF % D6 % D0 % CA % FD % d 1% A7 % D6 % AA % CA % B6 % B5 % E3 & amp； lm = 0 & ampod=0