Literary criticism is an important and independent part of the arts and literature. It is a systematic, scientific, and in-depth analysis of writers' works, which explains the meaning of the work, evaluates its value, and exerts the social role of the work. The author summarizes his creative experience and guides the reader's appreciation of literature, which is highly practical and targeted. According to the above definition, which of the following is not a literary criticism? ['Article "On the Book of Songs".', 'Article "Comment on the Language and Characteristics of Mo Yan\'s Novels".', '"Research on Dream of Red Mansions".', 'Reportage "Goldbach Conjecture".']