The bank recommended Qianduan to its clients from 2015 to 2017. China Merchants Bank said the collaboration ended in April 2016. After that, Qianduan and its affiliate Guangdong Wangjin Holdings Co. Ltd. continued using the bank's name and logo to mislead investors, the bank said. The parties are suing each other over the termination of their collaboration. In May, Qianduan failed to pay 1.4 billion yuan ($200 million) to about 9,000 investors. The local police in Guangzhou investigated the case after receiving complaints from multiple investors who bought wealth management products from the platform. Zuo has been vice general manager of China Merchants Bank and head of the bank's Foshan Branch. The bank's collaboration with Qianduan happened while Zuo was the vice general manager.