Brother Ma, how about sticking to jade?

Ma is the bad guy in the TV series "Keeping Marriage as Jade". According to relevant public information, in the 40th episode of TV series "Keeping Marriage as Jade", Qi Ming was busy dealing with the company's affairs after he came back, but he learned from his mother that Su Ran had repaid the loan shark of 500,000 yuan for the company, so the old house was also sold. After Qi Ming asked Su Ran about it, he returned to the company and found an iou on his desk. This iou was written when he asked the old horse for help to raise money. I didn't expect the old horse to take this iou and borrow usury in his personal capacity.