Also known as "Miss Bagshot's Research Diary", the timeline is nineteen years later, third-person perspective, first-person narration.
I personally think that Grindelwald's worries are not unreasonable. Science will one day expose the wizarding world. Let's assume that nineteen years later, they are facing a crisis of exposure, and future generations will turn out the AD to make trouble. (Old Deng: The Chosen One of the Ministry of Magic)
The setting mainly refers to Pottermore. It's been too long since I read the original work. If there are any conflicts, let me know in the comment area. (If anyone really watches it)
The private design will indicate that there seems to be no follow-up to the Shen Dong series. There must be a lot of private design in this part, so I will try my best to make it as reasonable as possible.
Intention: A generation will eventually go away, but there will always be people who are still young.