Eh, the history doesn't support that meme; only the details and not the existence was allegedly burned (if it even happened at all). It's pretty well established that there were 7 major states (Qin, Qi, Chu, Yan, and the 3 Jin (Han, Wei, Zhao); notably, not including the official Zhou king) at the end of the Warring States period, and the Qin conquered the other 6 within a decade.
(Fun fact: the lesser-known state of Wey actually lasted longer than Wei due to not being worth conquering. In modern Chinese they are pronounced the same, but at the time they weren't.)
(Fun fact: the lesser-known state of Wey actually lasted longer than Wei due to not being worth conquering. In modern Chinese they are pronounced the same, but at the time they weren't.)