A girl was invited to the school by Dumbledore, the principal of Hogwarts School of Witchcraft and Wizardry, and handed her a seven-color chain with powerful magic.
The girl experienced a series of tests at Hogwarts and had various entanglements with the Gryffindor Triangle. Whether it is friend or foe, friendship or love, as well as the girl's life experience, are all revealed one by one around the amulet.
The plot of the story is compact and interlocking. I believe that after reading the first three chapters, readers will not be able to stop until the answer is revealed at the end. Although the plot seems cliche, there are clues and foreshadowings buried everywhere in the story, which is absolutely unexpected.