digital currencies and payment systems ppt, snippets

Guang' an Aizhong played N times last year, but it fell as soon as it was chased in heavy volume, and made several compensations. Make a list of those who didn't make money last year and lost money this year. In retrospect, it is possible to reduce costs.Guang' an Aizhong played N times last year, but it fell as soon as it was chased in heavy volume, and made several compensations. Make a list of those who didn't make money last year and lost money this year. In retrospect, it is possible to reduce costs.Feilong seeks the way: it must be a demon that has played and forgotten. Guang' an is almost certain to become a demon