In 2015, these three young men walked into my Laoliu Hotel and ordered Diguo Chicken, scrambled eggs with leeks, Mapo tofu and Tomato and egg soup on credit. At that time, I was full of concerns about their default, so I took a photo specifically as evidence. They left me a note before leaving: 'Buy some BNB in 2 years!'! ” Today, I want to tell them not to pay for meals anymore. I bought BNB, but I didn't hold it!