Lipid review refers to A Dream of Red Mansions. It is the sum of all the copies of The Stone. Generally speaking, there are three fat books in the world, namely, Zhi Yanzhai's Evaluation of Stone and Zhi Yanzhai's Re-Evaluation of Stone. There are three fat books recognized by modern redology, namely JOE, Jimao and Chen Geng. The name of Sanpang's book is "Re-evaluation of the Stone by Zhi Yanzhai". Three fat books are the basis of the study of redology by the New Redology School.
The existing version system of A Dream of Red Mansions can be divided into two systems. One is the fat evaluation system that only circulated the first 80 times and kept the comments of Zhi Yanzhai. The other is the Cheng Gaoben system pieced together by Cheng Weiyuan and Gao E, which deleted all the comments of Zhi Yanzhai and continued to write 120 times.