I think the URL is telling
Nightfall by Asimov was a 7 bodies problem - https://en.wikipedia.org/wiki/Nightfall_(Asimov_novelette_an...
And to be fair, Liu Cixin's book is a 4 bodies problem :)
This made me irrationally annoyed, lol. But that was only the start (I've only seen the TV show though)
Seriously there was so much wrong with that book.