Specific operation: Open the sign-in in nice official website, and keep punching in to get the digital collection. May 1 to May 3 1, continuous stay 18 days, or continuous stay 3 1 day. There is a digital collection.
Digital collection refers to the unique digital voucher corresponding to specific works and artworks generated by blockchain technology, which realizes authentic digital distribution, purchase, collection and use on the basis of protecting its digital copyright. At present, all major Internet giants have carried out related businesses.