Correct

淫书

/ yínshū / 
Strokes

Definition

obscene book/pornography

Example

As a Noun

erotica; obscene/pornographic book; pornography

1
Yánjìn
严禁
chūbǎn
出版
hé
和
xiāoshòu
销售
yínshū
淫书

strictly forbid the publication and sale of pornographic