After reading the cover letter of the Scientific American, as a technician working in hospital, I can't help myself expressing the infinite love of science.
It is Ali pay or We Chat pay in your mobile phone that gives you the courage upon the step to market without a penny in purse. It is online shopping such as Taobao and Jingdong that makes you buy anything you need keeping indoors. Convince taken by digital currencies arises trust between people.
Whatsoever, the blossom of digital finance is just a corner of the iceberg with the evolution of technology. What an amazing development brought by science!
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