Of course on the world stage this varies per country but I agree that a big of savings can get you there by retirement, especially if done early.
In China a common goal is to save 140k USD then invest it and retire by one’s mid 30s living a simple life.
Maybe also wget the website.
I’d be careful with using “ai.” Sometimes ChatGPT makes up answers even when you provide it with the data. -source it lies to me all the time