Hp: Life-Saving Rules for Traveling Through Time

As a level 10 researcher in "Harry Potter", Tang Tiantian suffered a miscarriage due to a common accident. On July 31, 1980, Lerace Rozier was born. The first rule of survival when traveling through time travel: Stay away from the protagonist group Interfering with the established destiny may not lead to salvation, but may also cause unknown changes. But when she really came into contact with these living characters, she could no longer just regard them as paper figures in film and television works. She wanted everyone to survive, including Hedwig, who would tilt her head to act coquettishly at her, and Dobby, who was persistent and kind. The gears of fate are turning again. Who is the child in the prophecy who truly ends the darkness? Ps: I am not slandering any college or any character. I try not to deviate from the main plot. All characters grow together.