This is an institutional risk test. Simply put, it is the evaluation of the operation of institutional funds by outsiders. For example, if you speculate in stock futures and lose 20%, but you have a monthly salary, you can use your salary to increase your position and share the cost equally. Your salary is working capital, and it is uncertain whether you can make a profit. If you can't get the money and stock futures continue to fall, you will be at great risk.