复习16-18（300）

Chapter 16: The Chamber of Secrets

Ginny Weasley is taken into the Chamber of Secrets, and a message left on the wall declares that she will die. With the school on lockdown and the situation dire, Harry and Ron discover the entrance to the chamber in Moaning Myrtle's bathroom. They enter the chamber and find an unconscious Ginny and Tom Riddle, who reveals himself to be a memory preserved in the diary. Riddle explains that he has been controlling Ginny to reopen the chamber and summon the basilisk. Harry confronts and defeats the basilisk with the help of Fawkes, Dumbledore's phoenix, and destroys the diary, vanquishing Riddle.

Chapter 17: The Heir of Slytherin

Harry battles the basilisk and, with the help of Fawkes and the Sorting Hat, defeats it using Godric Gryffindor's sword. He destroys Tom Riddle's diary, which vanquishes Riddle and saves Ginny. The ordeal reveals that Lucius Malfoy planted the diary on Ginny to discredit Dumbledore and disrupt Hogwarts. With the immediate threat resolved, Dumbledore and Hagrid return to the school. The students and staff celebrate the end of the terror that plagued Hogwarts. The chapter brings resolution to the mystery of the Chamber of Secrets and highlights themes of bravery and friendship.

Chapter 18: Dobby's Reward

In the final chapter, the school returns to normal, and exams are canceled as a treat for the students. Harry tricks Lucius Malfoy into freeing Dobby the house-elf by giving him a sock hidden in Tom Riddle's diary. Dobby is overjoyed to be free from the Malfoys' tyranny. The chapter concludes with the joyful reunion of students and staff, and Harry returns to the Dursleys for the summer, feeling a sense of accomplishment and relief. The story ends on a positive note, with the promise of more adventures to come.