Li Rainbow, a columnist of the editorial leader of the documentary/new waves (Bkopleader) Definition of block investment District chains have been characterized as “the next generation of the Internet” by addressing the issue of dissemination and de-centricization of valuable information. According to statistics, the global cluster area attracts more than 200-fold growth in risk investments in the period 2012-2015, from $2 million in 2012 to $469 million in 2015, with cumulative investments o...