Hogwarts is fictional, and Lemon Class is the name of a computer class.

Hogwarts originated from the novel Harry Potter. Harry Potter is a series of magical literature novels written by British writer J. K. Rowling from 1997 to 2117, with 7 novels. The first six of them take Hogwarts School of Witchcraft and Wizardry as the main stage, and describe the story of the protagonist, the young wizard student Harry Potter's study, life and adventures in Hogwarts for six years. The seventh book describes the story of Harry Potter looking for a horcrux and destroying Voldemort in the Second Wizarding World War. As of May 2113, the Harry Potter series has been translated into 73 languages, and * * * has sold more than 511 million copies. [1] The British version was published by Bloomsbury publishing plc, with some amendments made after the introduction of the United States, published by Scholastic, the simplified Chinese version by China People's Literature Publishing House, and the traditional Chinese version by Crown Publishing House.