Why did $KMNO drop quickly after being listed on Binance?

Because the circulating data previously shown by CMC and CG was incorrect, both showing a circulating market cap of only around 100 million.

As a result, after Binance conducted due diligence, it was found that 300 million in market cap was actually unlocked. This is equivalent to an arbitrary increase of 200 million. Moreover, CMC and CG have not identified this issue to date.