Who experienced the "Crude Oil Treasure" incident back then?

US crude oil futures dropped to a penny, and someone bought ten thousand yuan worth.

They thought: worst case scenario, I lose ten thousand yuan, just dabble a bit, a little entertainment.

Who knew that half an hour later

crude oil futures plummeted, and they owed 40 million yuan.

Many people don't understand it, so let me break it down:

At that time the price was a penny,

ten thousand yuan could buy one million barrels.

Later the price dropped to -40.

At this point there were two options:

1. Wait a few days for crude oil delivery, you rent a ship to haul one million barrels of crude oil.

2. Sell off the one million barrel contract,

but because the price is -40,

you need to pay someone else 40 million yuan just to sell the contract.