The reason why Daidai traded with Chen Wanxian was to acquire the company. Torrent wants to buy Chen Wanxian's company and deal with him by attacking Chen Wanxian's company stock. Chen Wanxian seems to have a lot of chips in each stock, but in fact each stock is not enough. Staring at a stock to sweep the goods, Chen Wanxian didn't have enough chips to continue selling, and she went bankrupt when she couldn't deliver it.