What was a letter of recommendation?

I recommend "All-rounded Trash: Princess Iceberg's Smiling Lady" to you. The male protagonist of this fantasy romance novel is a white-haired, cold, powerful, and mysterious existence. He was the most mysterious person in this foreign world for the past three thousand years. His cold personality and the appearance of the gods of the nine heavens made him an existence that no one dared to approach. If you like a cool and powerful male protagonist, this novel will not disappoint you. I hope you like this fairy's recommendation. Muah ~😗