Correct

洛阳纸贵

/ luòyángzhǐguì /
Strokes

Definition

lit. paper has become expensive in Luoyang (because everyone is making a copy of a popular story) (idiom)/fig. (of a product) to sell like hotcakes

Example

Definition

paper is dear in Luoyang [a story about a writer Zuo Si(左思)in the Jin Dynasty, whose work Rhapsody on the Three Capitals (《三都赋》) was so popular and copied by so many people as to cause a paper shortage in Luoyang]―overwhelming popularity of a literary work; (of works) be all the rage for a time