Under normal circumstances, if you do more, you won't lose 50 thousand. But in extreme cases, even without leverage, you may lose money, or even owe money to the futures company after short positions, because the futures price may be negative. What about the China Bank crude oil treasure incident? If an extreme event occurs and the price continues to fall until the price is negative, then the futures company is owed money, or there is no limit on the price, and the price suddenly becomes negative. In this case, the liquidation will lead to a loss of 50 thousand yuan, owing money to the futures company.

If it is short, then the theoretical loss may be infinite, which is rare. There is a very small probability. Under normal circumstances, if the margin is insufficient, it will be leveled.

The risk of shorting is relatively higher than the risk of going long. Most people like to make more money slowly, while experts like to make quick money by shorting.