That’s a flavour of a what a mini crash can be with Nikkei experiencing its worst single day fall, BTC shed until $50k, Dow futures 500pts down, Aud puke more than one cent in a sharp dive and the Yen continues to move higher causing more pain on the yen carry trade.
A systemic event can easily follow from here from possible margin calls and liquidity squeeze on the financial system.
As I had cautioned here, you won’t want to wait for when the event starts.