"Blackback's Embarrassing Records: Heyshou Uncovered Files". The term "heyshou" actually subtly refers to "sexual intercourse". As for Blackback, it is the author himself/herself. In the preface, Blackback writes in such a "naked" way: "Sex can be drawn wonderfully!" After flipping through the entire book, the reporter found that its content shows no taboo about "sexual intercourse", giving detailed descriptions of topics like "the creation of new life", "the process of sexual intercourse", and issues such as "homosexuality" and "AIDS".