As a professional I'll answer for you.

The price of soybean oil is 9214. The contract is for 10 tons. The minimum margin is 5%

Your margin for one lot is 9214*10*0.05=4607

If it goes down to 7000 then your loss for buying up and floating is 9000-7000=2000 points which is equivalent to a floating loss of 2w yuan.

So say You 100w buy up if you can buy 200 up soybean oil What you need is 4000w. capital to get you to 7000 without blowing up. However, I personally recommend that you do not operate a full position, and it is unlikely that the price of soybean oil will fall to 7000, the price of soybeans is so high, and the price of soybean meal is so firm. So this is just theoretical on your part