Khác biệt giữa bản sửa đổi của “Harry Potter dành cho Muggle/Truyện/Hoàng Tử Lai/Chương 9”

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Harry brews his potion using a second-hand textbook, ''Advanced Potion Making'', that Slughorn loaned him. Handwritten into the book's margins are many new spells and jinxes, as well as revisions to standard potions. Harry finds the revisions more effective than the original instructions. With it, Harry brews the best Living Death draught in the class, winning the Good Luck potion.
 
When he later tells Ron and Hermione that he was using the mysterious book's instructions, Hermione becomes furious by his ill-gotten success. [[../../../Characters/Ginny Weasley|Ginny]], overhearing thsthis, asks if Harry is using instructions from a book. Remembering Ginny's nearly-fatal experience with [[../../Chamber of Secrets|Tom Riddle's diary]], Hermione tests the textbook with her wand for any hidden magical properties, but is unable to detect any. Harry notices somthingsomething written on the back cover: ''This book belongs to the Half-Blood Prince''. Whoever the "Prince" may be, Harry is grateful to this talented unknown student.
 
== Analysis ==