For domestic futures traders, whether it is short-term or long-term, the time difference between internal and external transactions may aggravate the risk of overnight positions.
Even if there is no time limit, the sudden risk blackbird incident that may happen overnight, or the data of heavy pounds, the market will skyrocket and plummet the next day, and traders will have palpitations and can't take the warehouse for the night.
If the trend is in line with your position, you may get rich profits by holding positions overnight, but once the above risk events occur, you may face huge loss risks.
For varieties that are greatly influenced by the external market, such as Shanghai copper futures, when the domestic market is closed, the international market is still trading. In case you go in the wrong direction and don't control the warehouse at the same time, if you wake up the next day, your account may have insufficient futures margin. If the third board continues, the futures will explode.